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  4. Biodiversity And Its Conservation Chapter-Wise Test 2

Biodiversity And Its Conservation Chapter-Wise Test 2

Correct answer Carries: 4.

Wrong Answer Carries: -1.

What is the primary reason for the high biodiversity of the Amazon Rainforest?

Frequent seasonal changes
Short evolutionary time
High solar energy availability
Low precipitation
3

The Amazon Rainforest has high biodiversity due to its stable climate and high solar energy input, which supports productivity.

Which of the following statements about conservation strategies is correct?

In situ conservation protects species in their natural habitats.
Ex situ conservation involves protecting species in their natural environment.
Conservation strategies are unnecessary for ecosystem balance.
Habitat destruction is a conservation strategy.
1

In situ conservation strategies, such as national parks and wildlife sanctuaries, protect species within their natural environment.

What is the estimated total number of species yet to be discovered on Earth?

1 million
3 million
6 million
10 million
3

Scientists estimate that around 6 million species are yet to be discovered and described.

India's share of global species diversity is approximately:

2.4%
8.1%
10.5%
12.7%
2

India constitutes about 8.1% of the global species diversity, making it one of the 12 mega-diverse countries.

Which of the following ecosystems has the highest biodiversity?

Deserts
Tundra
Tropical rainforests
Polar ice caps
3

Tropical rainforests have the highest biodiversity due to their stable climate and high solar energy input.

Which type of conservation effort involves preserving biodiversity outside of natural habitats?

In situ conservation
Ex situ conservation
Ecosystem-based conservation
Natural selection
2

Ex situ conservation involves preserving species outside their natural habitats, such as in seed banks and zoological parks.

Which of the following is an example of ex situ conservation?

Biosphere reserves
Seed banks
Sacred groves
National parks
2

Seed banks store plant genetic material outside their natural habitat, making them an example of ex situ conservation.

Which of the following statements about extinction is true?

Extinction rates are decreasing due to conservation efforts
The current extinction rate is 100-1000 times higher than natural rates
Only large animals are facing extinction threats
Extinction events have never happened in Earth's history
2

The current rate of species extinction is estimated to be 100 to 1000 times faster than in pre-human times.

Which of the following is a correct statement about habitat loss?

Habitat loss is a leading cause of species extinction.
Habitat loss has no impact on biodiversity.
Only marine species are affected by habitat destruction.
Protected areas like national parks contribute to habitat destruction.
1

Habitat loss due to deforestation, urbanization, and agriculture is one of the primary drivers of species extinction.

Which of the following is a correct statement about biodiversity hotspots?

They have a high number of endemic species.
They are areas with low species diversity.
They are found only in polar regions.
They do not require conservation efforts.
1

Biodiversity hotspots are regions with exceptionally high species richness and a significant number of endemic species.

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