Loss of Biodiversity MCQs and Answers

Are you looking for Loss of Biodiversity MCQs and Answers for medical entrance examinations? If yes, these are some most important multiple choice questions and answers on NCERT Class-12 Biology, Chapter-15 (Biodiversity and Conservation).

Here we composed these Loss of Biodiversity MCQs and Answers after reading the chapter on Biodiversity and Conservation from the NCERT book on Class 12 Biology. The questions are topics-wise and the students can relate the questions easily to the most important topics of this chapter.

Loss of Biodiversity MCQs and Answers

1. Why is the biological wealth of our planet declining rapidly?

a) Animal activities

b) Human activities

c) Plant activities

d) Ecological activities

Answer: b


2. How many species of birds are extinct due to the colonization of the tropical Pacific Islands by humans?

a) 2,000

b) 8,000

c) 10,000

d) 20,000

Answer: a


3. Who gives the Red List?

a) NSS

b) IUCN

c) WHO

d) NCC

Answer: b


4. According to the IUCN Red List (2004) documents, how many species have extinct in the last 500 years?

a) 2500

b) 1000

c) 890

d) 784

Answer: d


5. According to the IUCN Red List (2004) documents, how many vertebrate species have extinct in the last 500 years?

a) 1000

b) 500

c) 338

d) 784

Answer: c


6. According to the IUCN Red List (2004) documents, how many invertebrate species have extinct in the last 500 years?

a) 784

b) 359

c) 500

d) 2000

Answer: b


7. According to the IUCN Red List (2004) documents, how many plant species have extinct in the last 500 years?

a) 7

b) 8

c) 870

d) 87

Answer: d


8. Which one of the following is an example of recent extinction?

a) Dinosaurs

b) Archaeopteryx

c) Dodo

d) Mammoth

Answer: c


9. Which one of the following is an example of recent extinction?

a) Mammoth

b) Archaeopteryx

c) Dinosaurs

d) Quagga

Answer: d


10. Which one of the following is an example of recent extinction?

a) Coastal moa

b) Balearic cave goat

c) Thylacine

d) Dinosaurs

Answer: c


11. Which one of the following is an example of recent extinction?

a) Balearic cave goat

b) Steller’s Sea Cow

c) Hunter Island penguin

d) Aurochs

Answer: b


12. How many species have extinct in the last twenty years?

a) 2

b) 20

c) 27

d) 7

Answer: c


13. How many species worldwide are facing the threat of extinction?

a) 150

b) 15,500

c) 1500

d) 15

Answer: b


14. How many mass extinctions have occurred since the origin and diversification of life on Earth?

a) 2

b) 8

c) 3

d) 5

Answer: d


FAQs on Loss of Biodiversity

What is biodiversity?

Biodiversity is the variety of life on Earth. This includes all plants, animals, and microorganisms, their genes, and the ecosystems they live in.

Why is biodiversity important?

Biodiversity is essential for the functioning of ecosystems. It provides valuable resources, such as food, water, and medicines. Biodiversity also helps to regulate the climate and provides protection from floods and droughts.

What causes the loss of biodiversity?

The main cause of loss of biodiversity is habitat destruction. This can happen through natural causes, such as wildfires, or by human activities, such as logging, farming, and urbanization. Climate change is also a major threat to biodiversity.

What are the consequences of loss of biodiversity?

Loss of biodiversity can lead to ecological collapse, where an ecosystem can no longer support its species. This can cause a decrease in the quality of life for humans and other animals. It can also lead to the extinction of species.

What can be done to prevent the loss of biodiversity?

There are many ways to prevent the loss of biodiversity. These include creating protected areas, such as national parks, and promoting sustainable use of resources.

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