UPSC Civil Service Examination is one of the toughest exams in the country. Every year so many aspirants work hard and attempt the prelims in the hope of clearing the exams and becoming an officer.
Every year so many aspirants work hard and attempt the prelims in the hope of clearing the exams and becoming an officer. (Representative Photo)
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Clearing prelims is not an easy task. Every year many candidates fail to make it to the mains exam due to the difficulty level of the examination. Hence, It is time for applicants to rewind and attempt as many mock tests as they can, to check their preparedness to face the actual exams.
Check out the following previous year questions on environmental science and solutions along with it, to test your knowledge.
I. Certain species of which one of the following organisms are well known as cultivators of fungi?
(1) Ant
(2) Cockroach
(3) Crab
(4) Spider
Solution: The species of ants are well known as the cultivator of fungi.
II. The “Miyawaki method” is well known for the:
(1) Promotion of commercial farming in arid and semi-arid areas
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(2) Development of gardens using genetically modified flora
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(2) Development of gardens using genetically modified flora
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(3) Creation of mini forests in urban areas
(4) Harvesting wind energy on coastal areas and on sea surfaces
Solution: The Miyawahi method is well known for the creation of mini forests in urban areas. This technique is used worldwide for urban afforestation.
III. “Biorock technology” is talked about in which one of the following situations?
(1) Restoration of damaged coral reefs
(2) Development of building materials using plant residues
(3) Identification of areas for exploration/extraction of shale gas
(4) Providing salt licks for wild animals in forests/protected areas
Solution: Restoration of damaged coral reefs is known as ‘Biorock technology’. Here coral reefs and other marine ecosystems are allowed to recover from damage.
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IV. Which of the following is not a bird?
(1) Golden Mahseer
(2) Indian Nightjar
(3) Spoonbill
(4) White Ibis
Solution: Golden Mahseer falls under a kind of fish species. Hence, it is not a bird.
V. Which of the following are nitrogen-fixing plants?
(1) Alfalfa
(2) Amaranth
(3) Chickpea
(4) Clover
(5) Purslane (Kulfa)
(6) Spinach
Solution: Alfalfa, Chickpea and Clover are the nitrogen-fixing plants from the given list.
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