500 Important Biology Questions: SSC, Railways & State Exam

500 Important Biology Questions: SSC, Railways & State Exam

The candidates preparing for government exams like Banking, SSC, IAS, Railways need to be completely focused on their preparation strategy, as competition is getting tougher day by day. But in order to crack government exams, you need to prepare yourself extremely well.

500 Important Biology Questions: SSC, Railways & State Exam

Here we are providing you a few questions based on biology which will help in enhancing your grasp for the upcoming SSC, Railways and State Exam. Exam 2019.

1) Which protein is found in nails?


2) Where is Stapes bone found in human body?


3) Endoplasmic Reticulum are rough because of _______ present on their surface.


4) Where is urine stored in human body?

Urinary bladder

5) Early blight is a common disease seen in


6) The function of nervous tissues is to conduct messages:

throughout the body

7) Human insulin is being commercially produced from a transgenic species of:


8) Which hormone is secreted by the pituitary to start the ovulation process?

Luteinising hormone

9) Involuntary actions including blood pressure, salivation and vomiting are controlled by the_____


10) Ascaris, a kind of worm, lives in which part of the human body?

Small intestine

11) Human hypothalamus gland _______.

is present in the brain.

12) Ornithology is the study of _____.


13) Which is the reproductive organ of Angiosperms?


14) Elephants, Bears, and Rhinos are examples of


15) To determine the health of a water body, what is measured?

Dissolved Oxygen

16) What does a plant do with the sugar it makes ?

Converts it into starch

17) Is virus a living being ?

No, because it does not possess the machinery to duplicate itself

18) Air enters the lungs due to movement of

Rib muscles and diaphragm

19) Fish has a streamlined body to

counter the resistance of water

20) The flowering plants belong to the group


21) The plant organelles which can trip sunlight are

Chloroplasts only

22) The topmost skin layer that is exposed in a human body, is called __________.


23) What is the approximate Value of pH of Human Blood?


24) The process of converting wet waste to manure is called:


25) Which pollutant in water causes “Minamata’ disease?

Methyl Mercury

26) Plasma, Which is one of the blood’s constituent, is a __________


27) ______, also known as ethanoic acid, is an organic chemical compound best recognized for giving vinegar its sour taste and pungent smell.

Acetic Acid

28) Cadaver refers to _____.

A dead human body used for anatomy

29) ___________cannot be corrected with spectacles.


30) In a food chain, what is the difference between primary consumers and secondary consumers ?

Primary consumers eat only plant; secondary consumer eat primary consumers

31) Cholesterol is related to-


32) The blood groups in man were discovered by-


33) Major requirement of protein in the body is for-


34) The hardest part of a tooth is the-


35) Saliva has the enzyme .


36) Haemoglobin is found-


37) Night blindness is caused by lack of vitamin –

Vitamin A

38) The blotting technique used to identify the isolated protein is ________

Western blotting

39) ____ is a process by which metabolic waste is eliminated from an organism.


40) The olfactory receptors in human beings detect ______.


41) Where does glucose breaks down into pyruvate?


42) Which forms a common passage for both the sperms and urine in human males?


43) Plants utilise ________________ from the atmosphere for photosynthesis.

Carbon dioxide

44) The major component of thyroxin hormone is ____. Deficiency of ____ causes goitre.


45) The cells of sclerenchyma tissue have their walls thickened due to which chemical substance?


46) Which part of flower produces pollen grains that are generally yellowish in color?


47) Many marine animals use _______________ dissolved in sea-water to make their shells.


48) Which tissue provides support to plants and also stores food?


49) In sexual reproduction the male gametes are generally ______.

Both motile and small

50) The terminal part of the carpel in a flower, which may be sticky, is ______.


51) Living things constitute the biotic component of the ___________________.


52) Water which is suitable for drinking is called _______________ water.


53) Which type of pathogen causes the water-borne disease Dysentery?


54) Capra Hircus is the scientific name of ________.


55) In fertilisation of a flower, the fertilised central cell will develop into __________ .


56) Cockroaches belongs to the phylum_____


57) Which Vitamin is essential for the absorption of calcium?

Vitamin D

58) Build-up of which acid in our muscles during sudden activity causes cramps?

Lactic acid

59) Plants having body that is differentiated into roots, stems and leaves and have specialized tissue for the conduction of water and other substances, fall in which group?


60) Bacteria, blue-green algae or cyanobacteria and mycoplasma are examples of organisms of which kingdom?


61) Slow-growing large coloured patches on the bark of trees are the examples of symbiotic life forms called ______.


62) Blood is a connective tissue embedded in which type of intercellular matrix?


63) The wing of a bat and the wing of a bird are the examples of ______ limbs.


64) How many versions of each trait will be there in each child as per the rules for the inheritance of traits?


65) Organs having different structure and components but perform similar functions are called ______.

Analogous organs

66) Which is the longest part of alimentary canal?

Small intestine

67) Some amount of plasma, proteins and blood cells escape through the pores present in the walls of capillaries into the intercellular spaces in the tissue and form ______.


68) Epidermal cells of which part of plant often secrete a waxy water resistant layer on their outer surface?

Aerial parts only

69) Which part of plant cell, is selectively permeable?

Cell membrane

70) The following nerves which are attached to the brain and emerge from the skull is__________?

Cranial Nerves

71) The primary consumer in an ecology chain is: __________.


72) What is the most responsible factor for plant diseases?


73) Which is the smallest flower in the world?


74) The edible part of an onion is _____________.

Fleshy leaves

75) The study of flowers is called ____________.


76) An erythrocyte lives for approximately .

Four months

77) How does the pollination take place in maize?

Pollination by air

78) Study of fruits is called ____________.


79) Where is the pituitary gland located?


80) What is a mushroom?


81) The outer cover of plant cell is called ____________?

Cell wall

82) Which impart yellow colour to urine in humans?


83) In which process plants convert potential energy into kinetic energy?


84) Which part of the body most likely get affected when microbes enter the body through nose?


85) Number of RBC in an adult man per    of blood is ______.


86) What type of interaction is necessary for the survival of both the partners in association?


87) Which part of the plant helps in holding the plant firmly in the soil?


88) Plants with green and tender stems are called as _____.


89) Which type of plants are usually short and may not have many branches?


90) Oxygen is transported in blood mainly by _____.


91) Iron in haemoglobin exists as ______.

Ferrous ions only

92) Menopause is the stage in human female when ______.

Menstruation stops and reproductive capacity is arrested

93) In humans, exhaled air contains oxygen about .


94) The correct sequence of taxonomic categories is .

Division-class-order-family-genus -species

95) Ileum is .

last part of the small intestine

96) Pancreatic juice requires which medium for their action?


97) By which process the Chinese Scientists have cloned two identical long. tailed macaques?

Somatic cell nuclear transfer

98) The onion and garlic odour is due to the presence of which chemical?

Presence of sulfur

99) ____ of herbivores is lengthier than that of carnivores.


100) _____ consume cellulose based food and it takes longer time to absorb nutrients from cellulose.


101) Scientists of which country have developed working human skeletal muscle from stem cells in the laboratory for the first time?

United States of America

102) The rhythmic contraction of the lining of muscles of canal to push the food along the gut is called ______.


103) Which type of pigment is found in fruits and vitamins that are also known as pre-vitamins?


104) In which form the energy remain stored in the body that is used during emergency situations?


105) ______ is a plant disease characterized by curling of leaves and caused by a fungus, genus Taphrina, or virus, especially genus Begomovirus of the family Geminiviridae. It is most often observed in chili, tomatoes, papaya, peach and almond plant.

Leaf curl

106) ______ is the essential oil found in cloves?


107) _______constitute the upper part of aquatic ecosystem.


108) Deformed bones are associated with which disease?


109) Prostate in human body is a


110) ZIKA virus which damages the brain of the foetus is

Mosquito borne

111) When a person can see only nearby objects, the condition is called


112) Camel and Claming are the only mammals that posses ____ RBCs.


113) Acini and islets of langerhans are found in which gland?


114) 280 days is the gestation period of which animal?


115) Oncology is associated with treatment of


116) The O-T-C medicine Crocin is an

Analgesic and antipyretic

117) Least distance of distinct vision for normal eye is

25 cm

118) The test for diagnosing HIV is


119) The medicine paracetamol is

An analgesic and antipyretic

120) Between small and large human intestine which one is longer?

Small intestine

121) What did Edward Jenner pioneer?


122) Which of the following is reared for its fleece/fiber?


123) Where in the human body can you find the islets of Langerhans?


124) Which is the only organ in the human body that can regrow/regenerate?


125) Pollination by wind is called?


126) When the human body temperature falls by about F below the normal body temperature, the condition is known


127) A ______is a medical device for determining the approximate concentration of glucose in the blood.


128) A diet that contains the proper proportions of carbohydrates, fats, proteins, vitamins, minerals, fibrous indigestible material, nutrients and water necessary to maintain good health is called a ____.

Balanced diet

129) A fish’s heart pump only deoxygenated blood as it is a ___-chambered heart with an atrium and a ventricle.


130) There are over capillaries in our lungs.

300 million

131) The function of the lens in our eyes is to

Change the focal distance of the eye

132) Arteries carry blood, that is filled with


133) ______is found in the plant cell but not in animal cell.


134) _____ is the idea that new species are formed from the sudden and unexpected emergence of alterations in their defining traits.


135) Spinal Cord originates from _________.


136) A disease of dementia which increases the likelihood of young-onset Alzheimer is___________?

Down syndrome

137) Gout is a disease caused by excess accumulation of________?

Uric acid

138) What is the measure of temperature considered as normal in human body?

98.6 degree F

139) Zeatin is produced in ___________and transported to __________in the xylem where it promotes cell division.

Roots, Shoots

140) Allergy Screening Blood Test for human beings does not include _______.


141) ___________ is not caused by airborne transmission.

Hepatitis B

142) In human body, vertebrae are part of _________.

Spinal cord

143) The amount of light entering the human eyes is controlled by ___.


144) The insect ‘Apis mellifera’ is commonly known as_______?

Honey Bee

145) Bone deformities occur due to________?

Excessive intake of Fluorine

146) ECG is done to diagnose an ailment related to________?


147) Rabies is usually transmitted through an animal bite, for example, from stray dogs. It is also known as ______.


148) ______ is caused by infection with a member of the genus Entero-virus known as poliovirus (PV).


149) The part of the brain responsible for maintain balance like walking in a straight line or riding a bicycle is called-


150) The complete digestion of carbohydrates, proteins and fats takes place in_______

Small Intestine

151) Paternity can be determined by highly accurate tests conducted on blood or tissue samples of the father, mother and child. ____is the most suitable to judge paternity.

DNA Test

152) What do Longitudinal waves not exhibit?


153) What is the persistence of vision for human eye?

1/16th of a second

154) Where is Humerus bone situated?

Upper arm

155) What are the Number of the pairs of the spinal nerves?


156) What is the percentage of Plasma in the total blood volume in human beings?


157) _____is the main thinking part of the brain.

Fore Brain

158) Transpiration in tree is mainly effective during ______?

The time of sunset

159) Hemoglobin is used to transport _______.

Oxygen in human body

160) The building blocks of human body are_______.


161) Retina of human eye forms ____ and Inverted image.


162) The _____ phenomenon which is responsible for the movement of water in plants is:

Concentration difference and Transpiration

163) The ending of a nerve cell used to acquire information from our environment is called:


164) The ________consists of cranial nerves arising from the brain and spinal nerves arising from the spinal cord.

Peripheral nervous system

165) Leukemia is a type of human disease which is

a cancer of the white blood cells

166) Science of the study of preserved remains or traces of animals, plants, and other organisms from the remote past is called


167) The plant hormone which is responsible for saving the crops from falling is ___.


168) Gout is a disease caused by excess accumulation of________?

Uric acid

169) The ‘lock and key hypothesis’ mechanism is related with_________?

For enzyme specificity

170) The term Cyberknife is most closely associated with __________?

Cancer Surgery

171) Human blood platelets releases _________which helps in clotting of blood.


172) Which part of the human brain is the centre for intelligence, memory and emotions?


173) Which  branch of medical science deals with the study and treatment of the liver?


174) A part in the human body which is popularly called the Adam’s apple is:


175) What type of medicine is used for treating indigestion?


176) What is the Trachoma a disease of:


177) A human adult’s entire digestive tract from mouth to anus is about _____meters long.


178) Human respiration releases

Carbon dioxide

179) Usually, colour blindness is

A genetic disposition.

180) Which is the fastest land animal in the World?


181) Rani khet bimari is a disease found in?


182) Which tissue is responsible for flexibility in plants?


183) What plant has the scientific name Solanum Tuberosum?


184) What are Vivipara?

Vertebrates that are born live

185) On an average, how many taste buds are present in a human tongue?

2000 to 8000

186) How many bones does a new born human baby have?


187) Birth control pills contain-

Mixture of progesterone and estrogen derivative

188) Dried fruit like raisins when soaked in water, bulge and get filled with water. What is the scientific reason that explains this daily life event?


189) Yeast used in making bread-

acts as a catalyst for fermentation.

190) Leprosy is also known as-

Hansen’s disease

191) A doctor advised a person to take injection of insulin because his/her:

Blood sugar was high

192) How many chambers in heart of frog?


193) What is the edible part of Lichi?


194) How many bones are present in face and skull of a human being?


195) What is the reason for the characteristic odour of garlic?

A sulphur compound

196) What is the main source of renin?


197) Sphygmomanometer is used to measure which of the following?

Blood pressure

198) Corpus luteum secretes which hormone to maintain pregnancy?


199) Which vitamin is chemically named as Naphthoquinone?

Vitamin K

200) Malpighian tubules are associated with which biological process?


201) The exudation of water droplets on the tips or edges of leaves of some vascular plants, is known as………..?


202) Which bird is having the largest egg?


203) What is the main source of renin?


204) Sphygmomanometer is used to measure ________

Blood Pressure

205) Corpus luteum secretes which hormone to maintain pregnancy?


206) ______is responsible for causing amoebic dysentery.


207) Malpighian tubules are associated with which biological process?


208) The branch of biology which deals with insects is called as……..?


209) Muscle pain that occurs after a hard workout in gym is due to

Formation of Lactic Acid

210) Which fruit is the only that wears their seeds on the outside?


211) In the plant kingdom Largest ovule is found in


212) An edible part of cauliflower is called


213) Gymnosperms plants produce neither flower nor fruit because they do not possess


214) The process of taking food into our bodies is called ______


215) How much brain Leeches have?


216) How much blood an average adult can lose up to which blood pressure and heart rate will stay close to normal.

30 percent

217) Synthesized food is stored in which form in leaves?


218) Exobiology is the study of _____

Life on other planets

219) Red root is the another name of

Beet root

220) The process of water movement through a plant and its evaporation from aerial parts is called?


221) Name of the  scientist who first studied living cells?

Robert Hooke

222) Which Vitamin is important for brain function the synthesis of red blood cells.

Vitamin B12

223) Genetic Mutation occurs in _______


224) The lifespan of white blood cells range from

13 to 20 days

225) Which  animal that has a tongue longer than its body?


226) Plants absorb dissolved nitrates from soil and convert them into

Free nitrogen

227) When pollen tube enters the ovule through chalaza, it is-


228) Shedding of leaves, flower, fruit or seed in plants is due to _________

Abscisic acid

229) The dramatic changes in body features associated with puberty are mainly because of the secretions of:

Testosterone from testes and estrogen from ovary

230) The excretory unit of the human kidney is known as:


231) What is the name of shortest bone in the human body?


232) Potato is a ____.


233) The segments of DNA or RNA coding for protein are called ?


234) Photosynthesis is the process by which plants______.

Produce food

235) Name the virus causing Chickenpox?

Varicella Virus

236) What is the normal temperature of human body?


237) Which compound present in D.N.A. does not form amino acid?


238) How many times a healthy person’s average heart beats in a minute?

72 times

239) The hormone which is known as ‘emergency hormone’ is______?


240) Blood, Bones and Cartilage are made up of a special type of_________?

Connective tissue

241) The sex of a newborn baby is determined by the chromosome inherited from_________?

The Father

242) What is the name of the longest cell in human body?

Nerve cell

243) Tikka disease is related with the crop___________?

Ground nut

244) Which mosquito causes Dengue fever?

Aedes aegypti

245) The gland which is responsible for growth and metamorphosis is_________?


246) Which disease is caused by the deficiency of calcium?


247) Which one is responsible for Coagulation of blood?


248) Among the biotic components of the ecosystem, the producer system is___________?

Green Plants

249) The disease caused by deficiency of protein in children is called________?


250) What is the average blood pressure of a human?


251) Alpha-keratin protein is present in which part/organ of human body?


252) What is the blood glucose level commonly expressed as?

milligram per deciliter

253) Which part of human body produces the bile juice?


254) A resting person usually has a pulse rate

Between 72-80

255) At the age of 3 years, the number of bones in human body is approximately


256) In human body, calcium and phosphate of blood are regulated by__________?

Parathyroid hormone

257) How much percentage of water in an infant human body is around?


258) Many young people get acne and pimples on the face due to ________?

increased activity of Sebaceous gland

259) Lymphocyte cells are formed in ________?


260) Phycology is the branch of Botany in which______?

we study about Algae

261) _______ is required for the synthesis of nucleic acid.

Folic acid

262) Hepatitis is a disease caused by________?


263) Which of the following hormone accelerates the rate of heartbeat?


264) The enzyme which is necessary to bring about clotting of blood is_____?


265) The energy released by 1 gram of glucose is________?

4 kcal

266) The plant dye Henna imparts orange-red colour to skin and hairs due to its reaction with ______?

Protein and amino acids

267) _______ is without red blood cells.


268) The corner of the cells of collenchyma tissue in plant is thickened due to_____?

deposition of Cellulose and pectin

269) Total salt content in blood is ________?

about 0.85 to 0.9%

270) The enzyme which is necessary to bring about clotting of blood is_____? .


271) Why does only male frog produce croaking sound?.

because  Male frog have three pair of vocal cord

272) The organelle in the cell, other than nucleus, contains DNA is_______?


273) Thyroid gland is situated_______?

Below the Larynx

274) An organism which contains single chromosome and cell division occurs through fission or budding is____________?


275) A ________ is a type of virus that attacks only bacteria. It uses the bacteria to reproduce itself. Bacteriophages work by injecting their own DNA into bacterial cells.


276) The plant hormone which is helpful in making RNA and protein is________?


277) The part of human body which has greatest number Sweat glands is__________?

The palm of the hand

278) The unit of Nervous system is______________?


279) _______ in Hindbrain controls the involuntary actions of our body.


280) Leptospirosis is ………………………?

Infectious Disease

281) Cobalt is a component of the Vitamin_________?

Vitamin B12 .

282) The animals which eat both plants and animals are known as_________?


283) The disease which has a suffix encephalitis after its name is generally a disorder of ______?


284) The outer most boundary of cell is____________?

Plasma membrane

285) How does Dementia happen?

It may be caused due to HIV infection

286) The digestive enzyme ____ is required to digest fat.


287) What is the process of getting back a full organism from its body part called?


288) The ‘mad-cow disease’ is caused by__________?


289) Excess ______ are broken down in the liver to form urea. This is excreted by the kidneys in urine.

amino acids

290) The total number of permanent incisors in both the upper and lower jaws of the cattle and buffaloes are____?


291) What is Spermology?

it is the study of seed

292) What quantity of carbohydrates is present in a hen’s egg?

0.61 g

293) Deep fried foods contain which type of substances that harms health?


294) Scar tissues replace the original tissues of the organs in which viral disease?

Liver Cirrhosis

295) Southern blotting technique is used in…..?

To detect specific DNA sequence

296) Jaundice is an early symptom of which organ disease?


297) Osteoblast is commonly called as…..?

Bone cells

298) Which weed is widely used to reduce water pollution caused by industries effluents?

Elephant Grass

299) Silviculture is associated with which of the following?


300) Yawning is caused due to…..?

Excess concentration of carbon dioxide

301) Which element is crucially essential for blood clotting?


302) Which part of eye is affected in myopia?


303) What is the estimated time taken by RBC to circulate in human body?

20 Sec

304) What does the little bumps on the tongue is called?


305) In Cystic Fibrosis which part of body is damaged most?

Lungs and Pancreas

306) Which mineral is essential for the transportation of oxygen in the cell?


307) _______ is inflammation of the airspaces in the lungs which is most commonly caused due to an infection caused by the bacteria called Streptococcus pneumoniae.


308) Which type of muscle represents voluntary action?


309) Antibody is also known as ______ (Ig) i.e. a large Y-shaped protein with both heavy and light polypeptide chains that is used by the immune system to lock neutralize the pathogens.


310) Who proposes the theory of origin of life on earth?


311) The component in light causes suppression of melatonin produced by the pineal gland is_______?


312) The disease is caused by deficiency of Nicotinic acid is_______?


313) The number of arteries present in Human Umbilical Cord are______?


314) An organ in human body produces albumin which is one of the major components of blood serum is________?


315) What is the process called by which new species develop from the existing species?


316) What is called the longest fibre on the cell body of a neuron?


317) The bacterium which is responsible for the formation of curd is_________?

Lactic acid bacteria

318) _____ led to the expulsion of milk from the breast during suckling.


319) Human Papilloma Virus is related to ________?

Cervical Cancer

320) Conchology is the study of …….?


321) Edible mushrooms are the typical example of ……?


322) Which part of mollusc secretes the shell material?


323) What are the Signs of Vitamin C Deficiency?


324) The  corona virus that kills human is______?


325) Causing agent of a disease produces Integrase enzyme which is________?


326) The group which represents the most commonly found cancers in the world is_______?


327) In which part of the body digestion of protein begins?


328) It is not advisable to sleep under a tree at night because of___________?

Release of carbon dioxide

329) Chicken pox is transmitted by which mode?


330) Which is the largest part of pituitary gland?

Frontal lobe

331) How many stages of cell division are observed in mitosis?


332) Who  is known as the father of microscopic anatomy?

Marcello Malphigi

333) Singer and Nicolsan were associated with …..?

Fluid Mosaic Model

334) Insulin’s are developed in which cell?

Beta cells of pancreas

335) Which vitamin is chemically named as Panothenic acid?

Vitamin B5

336) HIV attacks which cell on the very first invasion to the human body?

CD 4

337) Otology is associated with the study of ….?


338) The Glands which are associated with the Human Digestive System is_________?

Salivary Glands, Liver & Pancreas

339) The nerves which are attached to the brain and emerge from the skull is_________?

Cranial Nerves

340) What is the pigment that is responsible for absorption of light in plants?


341) What is the process of removal of toxic wastes from the body of an organism called?


342) The part of the Quinine plant is commonly used drug for Malaria is_________?

Stem bark

343) An extension of the epidermal cells of a root which is in direct contact with the soil is__________?

Root Hairs

344) What is the Cause of Bunchy top of banana plant disease?


345) Pest-resistant cotton commonly known as ‘Bt-Cotton’ is genetically engineered by inserting a gene from a-


346) Which is the largest phylum in animal kingdom?


347) Life span of RBC?

120 Days

348) Where the digestion of Proteins occurs?


349) Chemical Name of Vitamin E-


350) What happen when one gets exposed to carbon monoxide which is extremely dangerous and can kill a patient?

COHb is stable compound and thus deprives blood of its ability to transport oxygen

351) The statement  “I flatter myself having discovered the method that nature employs to purify air.  It is vegetation.” who said?

Joseph Priestley

352) In how much time human will lose his consciousness if blood stops flowing to the brain?

5 sec

353) What is Bombyx mori that produces fine filaments of silk inside the cocoon?


354) Somatotrophic hormone affects the growth of which part of the human body?


355) Chemical name of Vitamin K is_________?

2 Methyl-1, 4-naphthoquinone

356) What is the ‘xylem’ in plants responsible for?

Transportation of water

357) The five major plant hormones are auxins, gibberellins, cytokinins, abscisic acid, and _____.


358) What is the term used for pathological increase in the count of platelets?


359) _______ is the master gland which is responsible for the secretion of major hormones like GH, FSH,PRL, ACTH, TSH and LH.

Pituitary gland

360) Myelin sheath is associated with


361) Which cell organelles possess another set of DNA inside the cell body?


362) ______, endoplasmic reticulum, hemoglobin and vesicles are together responsible to transport ions, molecules and protein as well in the human body.

Golgi bodies

363) As per the scientific theories human mind can be classified into how many stages?


364) _____ is the most intelligent organism in the world.

Great Ape

365) ________ is the disorder of eye which is often called spider view. In this disorder a person cannot distinguish between horizontal and vertical lines.


366) _______ is a viral disease cause by the mumps virus. It is recognized by fever, muscle pain, headache and poor appetite.


367) ______, gibberellins are the hormones that promotes growth by promoting cell division whereas abscisic acid is a plant hormone that induces dormancy. Hence inhibits plant growth.


368) ________ is a device which is used to measure blood pressure using the mercury. This device is also called blood pressure meter or blood pressure gauge.


369) The common salt is iodized to prevent the occurrence of which of the following diseases in the human body?


370) Rh factor is related to-

Blood Transfusion

371) Chlorophyll, the green pigment of plants, Contains which of the following element-


372) ______ can be used as air pollution indicators, especially of the concentration of sulfur dioxide in the atmosphere.


373) What is the protein inside red blood cells that carries oxygen?


374) _____ (or flowering hormone) is the hypothesized hormone-like molecule responsible for controlling and/or triggering flowering in plants.


375) What is the acid that produces in stomach to help digestion of food?

Hydrochloric acid

376) Human body can store roughly ____ grams, or 2,000 calories’ worth, of carbohydrates in your liver and muscles.


377) ______ is a condition characterized by Bruising, bleeding gums, weakness, fatigue and rash are among scurvy symptoms by a prolonged deficiency of vitamin C(ascorbic acid) in the diet.


378) AIDS virus is made up of ?

Single-stranded RNA

379) Which deficiency is a disorder which may cause dental caries –


380) Antibody formation takes place in _____.


381) Query fever or q fever is spread to humans by ______


382) Neonatal tetanus is …..

Bacterial infection

383) Litmus, a water-soluble mixture, extracted from lichens is obtained from


384) Lifespan of Leukocytes is-

13 to 20 days

385) _______also called leukocytes or leucocytes.

White blood cells (WBCs),

386) The long, slender projection of a nerve cell that conducts electrical impulses (carrying information) away from the nerve cell body and transmits this information to different neurons, muscles, and glands is known as-


387) When the electric impulse travels along the axon and reaches the other end called the synaptic terminal, this impulse triggers the release of-


388) The food which is going to enter small intestine from the stomach is acidic in nature and has to be alkaline for the pancreatic enzymes to act. Which is the organ that accomplishes?


389) ____ releases Bile juice which converts the acidic enzymes into alkaline.


390) Organisms using simple food material acquired from inorganic sources in the form of carbon dioxide and water are called-


391) A _______ is a plant that derives some or all of its nutritional requirements from another living plant.

parasitic plant

392) ______ is found in two main areas – saliva in the mouth and pancreatic juice in the pancreas. Pancreatic juice is secreted into the small intestine where it helps continue digestion. In both areas amylase helps to break down starch into simpler sugars.


393) ECG is done to diagnose an ailment connected with?


394) What is the most basic criteria used to decide whether something is alive?

Life processes

395) The site where complete digestion of carbohydrates, proteins and fats takes place is called-

Small Intestine

396) The ending of a nerve cell used to acquire information from our environment is called:


397) ______ are those where we act rapidly/ without thinking.

Reflex actions

398) Receptors used to detect taste are known as:

Gustatory receptors

399) _____ carries deoxygenated blood from different parts of body to the lungs via heart. And in order to prevent the back flow of deoxygenated blood they are provided with valves.


400) Biologically silk can be classified as …?


401) In which medium does the gastric juice works in an effective manner?


402) A person is facing an issue regarding the metabolism of fats, which part of his brain can be said to malfunction?


403) Which catalyst is used in conversion of sucrose into glucose and fructose?


404) Tuberculosis is which type of disease ?


405) ______curve is obtained when a population grows in the absence of environmental resistance .


406) ________ is secreted by pituitary gland which targets testes or ovaries and it is responsible for the development of corpus luteum and progesterone secretion in females and testosterone secretion in males.

Luteinizing hormone

407) The evolution of fish can be traced in which era?


408) Which mosquito is responsible for Japanese encephalitis?


409) Wind, water, and animals are the _______to carry the seed from one place to another.


410) In prokaryotes during aerobic respiration one molecule of glucose releases ____.

36 ATP

411) ______ is secreted in stomach which converts protein into peptones.


412) _____ are thick walled as they carry oxygenated blood through them.


413) Which organism has single functional ovary instead of two ovaries?


414) Ptyalin which is an enzyme present in human saliva acts on glucose to convert it into ….?


415) Typhoid is caused due to the bacteria called ______.

Salmonella typhi

416) Eutrophication can cause a decrease in the quantity of …?

Dissolved oxygen

417) Which term is used for the application of biotechnology in medical process?

Red biotechnology

418) ______ is the first cloned pashmina goat, this cloning was jointly done by SKAUST and NDRI.


419) Mycorrhiza is said to be the mutualistic association between higher root of plants and …..?


420) ______ is protein digesting enzyme which converts caseinogen in casein.


421) Thrombocytosis indicates the pathological increase in ….?


422) The systolic and the diastolic pressure of blood produces the lub dub sound in the ____.


423) _______ is double walled cup like structure which constitutes nephron and carries out the ultra-filtration.

Bowman’s Capsule

424) In which form is the carbon dioxide circulated in the blood?

Magnesium Carbonate

425) What is the average gestation period of the cow?

280 days

426) ________contains a large amount of fat as compare to buffalo, cow and camel.

Reindeer’s milk

427) Anti-malarial drug quinine is made from the bark of ______.


428) Which element increases the absorption of water in plants?


429) Calcium is necessary for the strength of bones and teeth and is abundantly present in _____.


430) Mutation refers to sudden change in the genetic composition and the theory was postulated by _____.

Hugo De Vries

431) The evolution of human species is mainly associated with …..?


432) Which cell has the ability to develop into any type of cell?

Stem Cell

433) Who determines the structure of DNA?

Watson and Crick

434) Which sugar is expressed in RNA?


435) _______ is a multibranched polysaccharide of glucose that serves as a form of energy storage in humans, animals, fungi, and bacteria.Glycogen, sometimes called “animal starch”.


436) Which human organ is responsible for balancing water levels and salt levels?


437) Which vitamin is generally exerted by human in urine?

Vitamin C

438) The ______ are a group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes.


439) ______ was a female domestic sheep, and the first mammal cloned from an adult somatic cell, using the process of nuclear transfer.


440) If the cell gets damaged, then one of the lysosomes bursts, releasing those digestive enzymes. The released enzymes then digest their own cell and ultimately the cell dies. Hence, lysosomes are called ______of the cell.

suicide bags

441) Beriberi is a disease caused by a vitamin B-1 deficiency, also known as ______.

thiamine deficiency

442) Hemophilia is :

Blood doesn’t clot normally

443) With which of the body organ ‘Pacemaker’ is associated with


444) Enzymes are known to catalyze more than 5,000 biochemical reaction types. Most enzymes are _____.


445) Femur is ……. in the human body?

Largest bone

446) The formation of blood platelets takes place in.

Bone marrow

447) Which vitamin Plays an important role in blood clotting?

Vitamin K

448) _____of sugarcane disease is caused by Colletotrichum falcatum Went

Red rot

449) The study of relations of organisms to one another and to their physical surroundings is defined as?


450) HIV often changes its shape due to the presence of?

Reverse Transcriptase

451) Humerus bone is situated in-

Upper Arm

452) What is the name of the fungus that grows on bread?


453) What is Quinine and is obtained from which plant?

bark, Cinchona plant

454)  Chromosomes are found in?


455) If you are eating a carrot, that means you are eating a?


456) Which plant hormone is known as STRESS HORMONE in plants?

Abscisic acid

457) In human each cell contains how many chromosomes.


458) The process of producing similar populations of genetically identical individuals is called-


459) Yellow colour of cow’s milk is due to the presence of?


460) Which part of the plant are the lungs of the plant?


461) What name is given to organisms that are so small and can be seen through a microscope?


462) Name the parts of Amoeba which help it in moving and also in capturing the food.


463) What type of plants can fix nitrogen gas of the air into compounds of nitrogen?

Leguminous plants

464) Food passes through the stomach directly by:

the small intestine

465) Your body needs vitamins and minerals because:

they help carry out metabolic reactions

466) Name the causative micro-organisms of the foot and mouth animal disease.


467) Those organisms which cannot make food themselves by the process of photosynthesis and take food from green plants or animals are called _____


468) Alcohol is produced with the help of _______.


469) A substance needed by the body for growth, energy, repair and maintenance is called a:


470) How much energy per unit is liberated during anaerobic respiration?

28 KCal

471) Xerophthalmia is associated with the deficiency of __________.

Vitamin A

472) Which genetic disorder is associated with an additional chromosome 13?

Patau Syndrome

473) Henle’s loop which is associated with excretory system is found in which shape?

U – shaped

474) Sea Urchin is associated with which phylum?


475) Which period evidenced the extinction of Dinosaurs?


476) Fontana is associated with the discovery of ….?


477) Dendrology is study of ….?


478) A person is feeling immense pain after an operation, which part of brain is making him feel such pain?


479) A vitamin is chemically called calciferol, it can be self synthesized by the body. It is likely to be…..?

Vitamin D

480) RBC when viewed single is ______ in colour but if viewed in group it appears red in colour.


481) _______ is highly modified saliva that consists zootoxin and is harmful for those creatures who lacks in the metabolism to digest it.

Snake venom

482) The smallest Human Chromosome is________?

Chromosome 21

483) The useful part of Zingier officinale is ____?


484) _______ is expressed in two numbers. The higher number is known as Systolic Pressure, or the amount of force (as measured in millimetres of mercury) that is exerted against the artery walls during a heartbeat (contraction). The lower number in the Diastolic pressure, which does the force exist while the heart is resting between beats.

Blood Pressure

485) Percentage of Glucose in the Urine of a healthy person is ___________?


486) The bacterial cells which are found in cubical packets are _________?


487) Largest animal Phylum from the following is_________?


488) Hodophobia is a fear from_______?


489) Plants having respiratory roots are________?


490) Rafflesia is which type of plant that has the largest flowers and found in many parts of the South East Asia?

Parasitic Plant

491) Lemurs belong to which group?


492) The calcareous sponges of class _____ are members of the animal phylum Porifera, the cellular sponges. They are characterized by spicules made out of calcium carbonate in the form of calcite or aragonite.


493) How many the Chromosomes are there, affected by Turner syndrome?


494) The process of cell division happens in_______?


495) Hypoglycemia is correctly defined by__________?

Lower than normal level of thyroxin secretion

496) Pleura is found in which part of the human body?


497) The most commonly found cancers in the world is from the group of____________?


498) _______ is Radish. The Edible parts are roots, but Radish leaves and seedpods which are fruits are also edible.

Raphanus sativus

499) Who suggested first the existence of genes?

Gregor Mendel

500) The organism that grows on Common Bread is____________?



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