Biodiversity & Environmental Issues Test

Assertion: The pattern of species diversity on earth is not uniformly distributed.

Reason: Species variation is generally highest in the tropics and decreases towards the poles.

Question 1/10

14 %

50 %

24 %

35 %

Question 2/10

gamma diversity

species diversity

community diversity

genetic diversity

Question 3/10

An increase in the number of species

The decrease in the number of species

Mass extinction

Formation of the universe

Question 4/10

They provide social, economic and environmental beneficiaries.

They prevent flood and recharge groundwater.

Being rich in nutrients, they provide a diverse and productive ecosystem.

All options are correct.

Question 5/10

population diversity

community diversity

habitat diversity

landscape diversity

Question 6/10

90 %

50 %

6 %

1 %

Question 7/10

Over-exploitation

Co-extinctions

Invasion of alien species

Loss of habitat and fragmentation

Question 8/10

only statement i) &iii) are correct.

only statement ii) &iii) are correct.

only statement iii) is correct.

all statements are correct.

Question 9/10

Assertion is correct but reason is incorrect.

Assertion is incorrect but reason is correct.

Both assertion and reason are correct.

Both assertion and reason are incorrect.

Question 10/10

Decrease of alien species

They turn invasive and cause decline or extinction of indigenous species

They turn invasive and cause increase species

Increase in habitat