What is a keystone species?

(1) A species which makes up only a small proportion of the total biomass of a community, yet has a huge impact on the community's organization and survival,

(2) A common species that has plenty of biomass, yet has a fairly low impact on the community's organization

(3) A rare species that has minimal impact on the biomass and on other species in the community.

(4) A dominant a large proportion of the biomass and which affects many other species.

Which of the following is best method of germplasm conservation ?

(1) Herbarium

(2) Botanical garden

(3) Seed bank

(4) Zoological park

Which one has the largest species variety in India ?

(1) Wheat

(2) Maize

(3) Rice

(4) Potato

Dust, oolong and brick are varieties of
(1) coffee

(2) pepper

(3) tea

(4) lavang.

India is one of the twelve megadiversity countries with ______ of genetic resources of the world.

1. 12.1%

2. 18.1%

3. 38.1%

4. 8.1%

Which of the following is not an invasive species?

(1) Parthenium hysterophorus

(2) Nelumbo (lotus)

(3) Lantana camara

(4) Eichhornia crassipes

The total number of biodiversity hotspots in the world are

(1) 72           

(2) 34             

(3) 52           

(4) 24.

Which of the following statements is not true?

(1) The biodiversity decreases with increasing altitude.

(2) The biodiversity decreases with increasing pollution.

(3) The fishes show greatest biodiversity among vertebrates.

(4) The biodiversity of bryophytes is greater than that of angiosperms.

One out of the following is not responsible for biodiversity loss.

(1) Alien species invasion

(2) Co-extinction

(3) Ex-situ conservation

(4) Deforestation

Refer the following figure represent global biodiversity. Identify A-E and choose the correct option.