IAS Prelims 2017 Important Topics on Current Affairs: The Union Public Service Commission (UPSC) will conduct the civil services (CS) preliminary examination on June 18 this year. It is one of the most esteemed and toughest exams in the country. With a success rate of 0.1- 0.3 percent of the total percentage of candidates who apply, it is really difficult to nail the examination.
As you know, On 28th March 2017, we have shared IAS Prelims 2017 Important Topics on current affairs which will help you prepare for your upcoming examination. Here is the topic that we have discussed on 5th May, Click on the link below to explore.
As promised, today we are going to continue with the next topic i.e Adaption Made For Survival in Tropical Region. Let us provide you the brief explanation of the said topic.
IAS Prelims 2017 Important Topics on Current Affairs: Adaption Made For Survival in Tropical Region
Current Affairs is an extremely essential component of all major competitive exams. An aspirant who has a grip over General knowledge is always at an advantage, not just for written examinations but also interviews. Updating Daily GK will help you perform well in all the competitive exams.
Let us provide you the explanation of the given topic.
ADAPTATIONS MADE FOR SURVIVAL IN TROPICAL REGION
Every organism is suited to live in its particular habitat. Each organism is adapted to its particular environment. An adaptation is thus, “the appearance or behaviour or structure or mode of life of an organism that allows it to survive in a particular environment”.
The Tropics are the land and sea areas between the Tropic of Cancer and the Tropic of Capricorn which are 23.5 degrees north(Cancer) and south(Capricorn) of the Equator.
These areas are typically hot, humid and rainy, with lush vegetation and lots of insects, snakes and reptiles. But these conditions are most pronounced at or near sea level and change as the land rises, e.g. into mountains. The tropical region is that portion of the earth lying between The Tropic of Cancer and the Tropic of Capricorn. Here are the Basic characteristics:
• It is characterized by hot and wet climate throughout the year.
• The day temperatures are high with very high humidity. At night the temperature goes down but the humidity remains high.
• The forests are thick hence the dense “roof ” created by leaves and branches does not allow the sunlight to reach the ground. The ground remains dark and damp.
• Only shade tolerant vegetation may grow here. Orchids, bromeliads grow as plant parasites.
Tropical Rainforest Plant Adaptations:
Plant survival in a tropical rainforest depends on the plant’s ability to tolerate constant shade or to adapt strategies to reach sunlight. Fungus is a good example of a plant that flourishes in warm, dark places created by the forest canopy and understory.
Some rainforest trees have special characteristics which are signs of adaptation to their environment. These are generally to do with obtaining nutrient, obtaining maximum sunlight, encouraging water run-off from leaves or avoiding being eaten by insects or animals.
• Drip tips and waxy surfaces on the leaves allow water to run off hence discourage growth of bacteria and fungi.
• Some plants climb on others to reach the sunlight.
• Buttresses and prop and stilt roots help hold up plants in the shallow soil.
• Flowers on the forest floor are designed to attract animal pollinators since there is relatively no wind on the forest floor to aid in pollination.
• Smooth bark and smooth or waxy flowers speed the run off of water.
• Plants have shallow roots to help capture nutrients from the top level of soil which is rich in humus.
• Many bromeliads are epiphytes (plants that live on other plants); instead of collecting water with roots they collect rainwater into a central reservoir from which they absorb the water through hairs on their leaves
Tropical Rainforest Animal Adaptations:
Animal Adaption is when an animal species adapts to its Physiological, Structural, or Behavioral patterns to be more compatible within their environment to better improve their survival possibilities. Physiological adaptation is when an animal perform special functions inside of its body, like a snake with its venom. Structural adaptation is the physical appearance of the animal, such as its shape or size.
• Many animals of the rainforest are camouflaged which aids them in avoiding predators.
• Some animals have adaptations that enable them to eat food that other animals can’t. For example parrots have strong beaks that crack the shells of very hard nuts.
• Some animals like the poison arrow frog produce toxins in their skin to ward off a predator. These animals are boldly colored as a warning for others to stay as far away as possible.
• Spider monkeys live in the upper canopy layers of rainforests, preferring undisturbed habitat, almost never coming to the ground. Their long limbs and strong tail are good examples of rainforest biome adaptations.
They swing through the rainforest canopy and hang suspended by their tails. The powerful prehensile tail plays the role of a fifth arm and is often used for balance or just hanging out.
• Many tropical rainforest animals have a diet that includes a large amount of fruit which is available year round.
Over here we conclude our article on IAS Prelims 2017 Important Topics on Current Affairs. Stay tuned with us for the rest of the topic that we will discuss day by day.