Biodiversity and Its Conservation
Test 2

Correct answer Carries: 4.

Wrong Answer Carries: -1.

Which of the following is NOT a method of ex situ conservation?

Botanical gardens
Cryopreservation
National parks
Zoological parks
3

National parks are examples of in situ conservation because they protect species in their natural habitats. Botanical gardens, cryopreservation, and zoological parks are methods of ex situ conservation.

Which of the following is NOT related to genetic diversity?

Variation among individuals within a population
Differences between populations of the same species
Diversity of species present in an ecosystem
Presence of different alleles of a gene
3

Genetic diversity refers to variation in genes within a species. Diversity of species in an ecosystem represents species diversity.

According to NCERT, which is the major cause of species extinctions in the last 500 years?

Habitat loss and fragmentation
Natural disasters
Plate tectonic movements
Changes in solar radiation
1

Habitat loss and fragmentation is the most important cause of biodiversity loss and has caused most species extinctions during the last 500 years.

Which of the following statements about biodiversity conservation is incorrect?

Conservation efforts help prevent species extinction.
Ex situ conservation includes seed banks and zoological parks.
Conservation is unnecessary for maintaining ecosystem stability.
In situ conservation protects species in their natural habitats.
3

Biodiversity conservation is essential for maintaining ecosystem stability and preventing species extinction.

Which species is cited in NCERT as an example of extinction caused by overexploitation?

Passenger pigeon
House sparrow
Snow leopard
Olive ridley turtle
1

NCERT cites the Passenger pigeon as an example of extinction caused by overexploitation by humans.

Which of the following statements about genetic diversity is incorrect?

Genetic diversity helps populations adapt to environmental changes.
Higher genetic diversity reduces the risk of extinction.
Genetic diversity has no role in evolution.
Populations with low genetic diversity are generally more vulnerable to diseases.
3

Genetic diversity provides the raw material for natural selection and evolution.

According to NCERT, which region of the Earth harbours the greatest biodiversity and is expected to contain the largest number of undiscovered species?

Polar regions
Temperate forests
Tropical rainforests
Temperate grasslands
3

Tropical rainforests possess exceptionally high species richness and are expected to contain many undescribed species.

Which of the following conservation strategies is an example of in situ conservation?

Botanical gardens
National parks
Zoological parks
Seed banks
2

In situ conservation protects organisms within their natural habitats. National parks are important protected areas.

Which of the following statements about biodiversity is correct?

Biodiversity includes genetic, species, and ecological diversity.
Biodiversity is generally higher in temperate regions than in tropical regions.
Species richness is uniform across all ecosystems.
Only plants contribute to biodiversity.
1

Biodiversity includes genetic, species, and ecological diversity.

The slope (Z) of the species-area relationship for most groups of organisms lies between:

0.01–0.05
0.1–0.2
0.3–0.5
1.5–2.0
2

For most taxonomic groups, the slope (Z) of the species-area relationship ranges between 0.1 and 0.2. For very large areas such as continents, Z may range from 0.6 to 1.2.

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