ENVIRONMENT FOR UPSC PRELIMS 2020 , SOLUTION OF TEST-31

1 . Solution (c)
They are halophyptes- Mangroves are salt tolerant trees, also called halophytes.

2 . Solution (d)

3 . Solution (c)
Both natural and man-made wetlands are included in Ramsar Convention.

4 . Solution (c)

5 . Solution (a)

6 . Solution (a)
Denitrification is the process of conversion of nitrates into nitrogen.

7 . Solution (c)
Savanna are tropical grasslands.

8 .  Solution (b)
Genetic diversity exists within species as well as between species.

9 . Solution (c)

10 . Solution (c)

Ecad-An ecad is a population of individuals, which although belong to the same genetic stock, but differ markedly in external characters such as size, shape and colour etc.
Ecological Niche -Ecological niche of an organism is the physical space occupied by it, its functional role in the community i.e. tropic position, its position in environment and the conditions of existence.