Indian Environment and Biodiversity MCQs (Multiple Choice Questions) with answers for various state exams and UPSC civil services Exams. Learn and prepare Objective type Questions on Indian Environment and Biodiversity.
1. The meaning of Bioaccumulation is-
It refers to the tendency of pollutants to concentrate as they move from one tropic level to the next.
It refers to how pollutants enter a food chain.
It is the process by which the nutritional worth of food is increased through selective breeding or genetic modification.
It is the process of adding micronutrients to food.
Answer: (b) It refers to how pollutants enter a food chain.
Solution: In bioaccumulation, there is an increase in the concentration of a pollutant from the environment to the first organism in a food chain. In biomagnification, there is an increase in the concentration of a pollutant from one link in a food chain to another.
2. What does the word 'Amensalism' mean?
It is a type of interaction of organisms in which one species is harmed and other benefits.
In this relation of organisms, one of the species benefits while the other is neither harmed nor benefited.
It is a type of biological interaction where one species causes harm to another organism but the organism which is causing harm is unaffected.
It is a relationship between organisms where one organism, the predator, kills and eats another organism, its prey.
Answer: (c) It is a type of biological interaction where one species causes harm to another organism but the organism which is causing harm is unaffected.
Solution: Self explainatory.
3. The conditions for declaring a region as a 'biodiversity hotspot' are
It must have at least 1,500 endemic plant species.
It should have lost at least 50% of its original habitat.
It must have at least 1,500 endemic plant species and animals.
It must have at least 1,500 endemic plant species and it should have lost at least 70% of its original habitat.
Answer: (d) It must have at least 1,500 endemic plant species and it should have lost at least 70% of its original habitat.
Solution: To declare a region as a biodiversity hotspot the factor of species richness with endemism and the degree of threat of extinction is considered.
4. Which of the following parts of India is considered biodiversity hotspots?
Himalayan regions only.
Himalayas and Eastern Ghats only.
North eastern part of India only.
None of the above.
Answer: (d) None of the above.
Solution: India has 4 biodiversity hotspots: the Himalayas, the Western Ghats, the Indo-Burma region and the Sundaland(Including the Nicobar group of Islands).
5. How many UNESCO-recognized Biosphere reserves does India have so far?
Answer: (c) 12.
Solution: Out of the 18 Biosphere reserves in India as of 2022, 12 are part of the UNESCO Man and Biosphere (MAB) Programme. They are-Nilgiri, Gulf of Mannar, Sundarbans, Nanda Devi, Pachmarhi, Nokrek Biosphere, Simlipal Biosphere, Achanakmar-Amarkantak, Great Nicobar, Agasthyamala, Kanchenjunga and Panna Biosphere.