Environmental Science MCQs

✅ The correct answer is option B.
Plants which grow in light are called Heliophytes.

✅ The correct answer is option A.
Total water content available in a soil is called as holard. Soil water available to plants is called as chresard.

✅ The correct answer is option B.
Ganga Action Plan was launched by Rajiv Gandhi in India on January 14, 1986. The main aim of this plan was to protect the river Ganga from further more pollution. It was launched to improve the quality of water treatment of the sewage, interception and other methods, also to prevent the mixing of the industrial wastes.

✅ The correct answer is option D.
Ozone layer depletion causes increased UV radiation levels at the Earth’s surface, which is damaging to human health. Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders.

✅ The correct answer is option B.
The portion of the earth and its environment which can support life is known as biosphere.

✅ The correct answer is option D.
The carrying capacity of a population is determined by its limiting resources.

✅ The correct answer is option B.
It changed its name to the International Union for Conservation of Nature and Natural Resources (IUCN) in 1956 and was also known as the World Conservation Union (IUCN) from 1990 to 2008. The IUCN is the world’s oldest global environmental organization. Its headquarters are in Gland, Switzerland.

✅ The correct answer is option C.
Because there are relatively few molecules and atoms in the thermosphere, even absorbing small amounts of solar energy can significantly increase the air temperature, making the thermosphere the hottest layer in the atmosphere. Above 124 mi (200 km), the temperature becomes independent of altitude.

✅ The correct answer is option C.
The interlocking pattern of various food chains is referred as food web.

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