NEET (UG)

Practice Test 1 — Biodiversity and Conservation

12 questions • 18 minutes • auto-graded with full solutions

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Section A — MCQ (Single Correct)

Question 1

Different varieties of rice represent:

Solution: Variation within a species = genetic diversity.

Question 2

Species diversity generally increases:

Solution: Latitudinal gradient — richest near the equator.

Question 3

In log S = log C + Z log A, A is the:

Solution: A is the area; S the species richness.

Question 4

The single largest cause of biodiversity loss is:

Solution: Habitat loss/fragmentation is the biggest cause.

Question 5

The Nile perch causing cichlid extinction is an example of:

Solution: It is an invasive alien species.

Question 6

Which is an in-situ conservation method?

Solution: National parks conserve species in their habitat (in-situ).

Question 7

A biodiversity hotspot in India is the:

Solution: Western Ghats & Sri Lanka is a hotspot.

Question 8

The Convention on Biological Diversity was signed at:

Solution: CBD came from the 1992 Rio Earth Summit.

Section B — Assertion & Reason

Question 9

A: The tropics have greater biodiversity than temperate regions.
R: Tropical regions have had a long, relatively undisturbed and productive environment with constant solar energy.

Solution: The long stable productive tropical environment is exactly why diversity is higher — R explains A.

Question 10

A: Protecting biodiversity hotspots is an efficient conservation strategy.
R: Hotspots cover a very small area of land yet contain a very high proportion of species and endemics.

Solution: Small area but very many species is precisely why protecting them is efficient — R explains A.

Question 11

A: A seed bank is an example of in-situ conservation.
R: In-situ conservation protects species within their natural habitat.

Solution: A is false — a seed bank is EX-situ; R is true (in-situ does protect species in their natural habitat).

Question 12

A: Cryopreservation can store gametes of threatened species for long periods.
R: Storage at −196 °C in liquid nitrogen halts the biological processes that would otherwise degrade them.

Solution: Halting biological activity at −196 °C is why long-term storage works — R explains A.