Environmental Science MCQs

✅ The correct answer is option D.
An ecosystem is said to be stable when it’s structure and function remains constant for a long period of time. Among the given options, most stable ecosystem is ocean. The first reason for its stability is it’s chemical composition which includes saline.

✅ The correct answer is option D.
None of the above

✅ The correct answer is option A.
In plants, photosynthesis takes place in chloroplasts, which contain the chlorophyll. Chloroplasts are surrounded by a double membrane and contain a third inner membrane, called the thylakoid membrane, that forms long folds within the organelle.

✅ The correct answer is option B.
Bears are usually hunted and killed for their skin.

✅ The correct answer is option A.
M.S. Swaminathan is an Indian geneticist and international administrator, renowned for his leading role in India’s Green Revolution a program under which high-yield varieties of wheat and rice seedlings were planted in the fields of poor farmers.

✅ The correct answer is option C.
The Biological Diversity Act, 2002 is an Act of the Parliament of India for preservation of biological diversity in India, and provides mechanism for equitable sharing of benefits arising out of the use of traditional biological resources and knowledge.

✅ The correct answer is option B.
In grazer food chain the living plants are directly consumed. A simple food chain as shown in the figure given below, in which energy from the Sun, captured by plant photosynthesis, flows from trophic level to other trophic level via the food chain.

✅ The correct answer is option A.
The pyramid of number of a parasitic food chain in forest ecosystem is always inverted.

✅ The correct answer is option A.
Plankton are the diverse collection of organisms that live in large bodies of water and are unable to swim against a current. The individual organisms constituting plankton are called plankters. They provide a crucial source of food to many small and large aquatic organisms, such as bivalves, fish and whales.

✅ The correct answer is option C.
If the air temperature increased, with no addition or removal of water vapour, the actual vapour pressure would stay the same.