Chapter Exam

Chapter 12: Biodiversity and its Conservation — Online MCQ Test

Q: Which of the following is the correct level of biodiversity that refers to the variety of species within a particular region?

Answer: B. Species diversity — Species diversity refers to the number and variety of species present in a region. It is one of the three main levels of biodiversity.

Q: The biodiversity hotspot concept is mainly associated with regions that are

Answer: B. high in species richness and under threat — Biodiversity hotspots are areas with very high species richness and high levels of endemism that are also under severe threat of habitat loss.

Q: Species richness generally increases with

Answer: B. increase in habitat heterogeneity — A greater variety of habitats usually supports more species. Habitat heterogeneity creates more ecological niches.

ZOOLOGY · CLASS 12th · Tamil Nadu State Board

Practice Chapter 12: Biodiversity and its Conservation with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 12th ZOOLOGY. This chapter covers: This chapter details levels of biodiversity spatial patterns extinction threats endangered species hotspot regions and in-situ and ex-situ conservation strategies.. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 12: Biodiversity and its Conservation — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 12th ZOOLOGY — Chapter 12: Biodiversity and its Conservation, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is the correct level of biodiversity that refers to the variety of species within a particular region?

A. Genetic diversity
B. Species diversity ✓
C. Ecosystem diversity
D. Ecological succession

Answer: B. Species diversity
Species diversity refers to the number and variety of species present in a region. It is one of the three main levels of biodiversity.

The biodiversity hotspot concept is mainly associated with regions that are

A. rich in fossil fuels
B. high in species richness and under threat ✓
C. located only in polar areas
D. free from human interference

Answer: B. high in species richness and under threat
Biodiversity hotspots are areas with very high species richness and high levels of endemism that are also under severe threat of habitat loss.

Species richness generally increases with

A. decrease in habitat diversity
B. increase in habitat heterogeneity ✓
C. constant temperature only
D. absence of sunlight

Answer: B. increase in habitat heterogeneity
A greater variety of habitats usually supports more species. Habitat heterogeneity creates more ecological niches.

Why are biodiversity hotspots considered priority areas for conservation?

A. They have only a few species but many predators
B. They contain many endemic species facing high threat ✓
C. They are always located in deserts
D. They are protected from all human activities

Answer: B. They contain many endemic species facing high threat
Hotspots have a high concentration of endemic species and are under intense threat from habitat destruction. Protecting them helps conserve a large number of unique species.

Which statement about extinction is most accurate?

A. Extinction occurs only due to natural disasters
B. Species extinction always happens instantly
C. Human activities can accelerate the extinction rate ✓
D. Extinction has no relation to habitat loss

Answer: C. Human activities can accelerate the extinction rate
Human activities such as deforestation, overexploitation, and pollution can greatly increase extinction rates. Habitat loss is one of the major drivers of extinction.

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Chapter 13: Environmental Issues