Environment 2018 MCQs

How is the National Green Tribunal (NGT) different from the Central Pollution Control Board (CPCB)?

The NGT has been established by an Act whereas the CPCB has been created by an executive order of the Government.
The NGT provides environmental justice and helps reduce the burden of litigation in the higher courts whereas the CPCB promotes cleanliness of streams and wells, and aims to improve the quality of air in the country.

Which of the statements given above is/are correct?

A 1 only
B 2 only
C Both 1 and 2
D Neither 1 nor 2

Show Answer

The correct answer is B.

Which of the following leaf modifications occur(s) in the desert areas to inhibit water loss?

Hard and waxy leaves
Tiny leaves
Thorns instead of leaves

Select the correct answer using the code given below:

A 2 and 3 only
B 2 only
C 3 only
D 1, 2 and 3

Show Answer

The correct answer is D.

In which one of the following States is PakhuiWildlife Sanctuary located?

A Arunachal Pradesh
B Manipur
C Meghalaya
D Nagaland

Show Answer

The correct answer is A.

Which of the following leaf modifications occurs/occur in desert areas to inhibit water loss?

Hard and waxy leaves
Tiny leaves or no leaves
Thorns instead of leaves

Select the correct answer using the codes given below.

A 1 and 2 only
B 2 only
C 1 and 3 only
D 1, 2 and 3

Show Answer

The correct answer is D.

In desert areas, plants have evolved various leaf modifications to minimize water loss through transpiration. These adaptations help plants conserve water in the arid environment.

Hard and waxy leaves: Some desert plants have leaves with a thick, waxy cuticle that reduces water loss by providing a barrier against evaporation. The waxy coating also reflects sunlight, helping to keep the leaves cooler and further reducing water loss.
Tiny leaves or no leaves: Many desert plants have small, compact leaves that minimize the surface area exposed to the sun and hot, dry air. This adaptation reduces water loss through transpiration. Some desert plants, such as cacti, have evolved to have no leaves at all, and instead perform photosynthesis through their green stems.
Thorns instead of leaves: Some desert plants, such as cacti, have modified their leaves into thorns or spines. These structures protect the plant from herbivores and also help to reduce water loss by minimizing the surface area exposed to the environment. The photosynthetic function is carried out by the green stems of these plants.

Trending now