Home
Class 12
BIOLOGY
Dodo, passenger pigeon and Steller's sea...

Dodo, passenger pigeon and Steller's sea cow became extinct in the last 500 years due to
(a) Habitat destruction
(b) Over-exploitation
(c) Bird-flu virus infection
(d) Pollution

A

habitat destruction.

B

over - exploitation.

C

alien species invasion.

D

co - extinction.

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Similar Questions

Explore conceptually related problems

Which of the following species extinct in the last 500 years due to over-exploitation? a) Quagga b) Steller's sea cow c) Passenger's pigeon d) Thylacine

Which of the following species extinct in the last 500 years due to over-exploitation? a. Quagga b. Steller's sea cow c. Passenger's pigeon d. Thylacine

The extinction of passenger pigeon was due to (A) increased number of predatory birds (B) over exploitation by humans (C) non-availability of the food (D) bird flu virus infection

Indicate whether the following statements are true or false. Correct each faqlse statement to make it true. (i) Mass extinction is the extermination of a large number of species due to catastrophers. (ii) IUCN Red list (2004) documents the extinction of 359 animal species. (iii) Quagga from Africa and Stellers sea cow from America have been extinct in last few years. (iv) Anthropogenic extinction is 10-100 times more faster than the rate of natural extinctions.

Assertion : Over-exploitation of a species reduces the size of its population eventually leading to its extinction. Reason : Steller's sea cow is a large, herbivorous, terrestrial mammal which is on the verge of extinction due to over exploitation. (a) If both assertion and reason are true and reason is the correct explanation of assertion. (b) If both assertion and reason are true but reason is not the correct explanation of assertion. (c) If assertion is true but reason is false. (d) If both assertion and reason are false.

Read the following statement A) 6th mass extinction species is being caused anthropogenically and is 10 time faster than the rate of natural extinctions. B) passenger pigeon have become extinct due to over Exploitations of humans. C) Norway has lower ecosystem diversity than India. D) more than 50000 varieties of mango occur in India. choose the option with correct sets of statement

There are four major causes of accelerated rates of species extinction, which are collectively called as 'the evil quartet'. Which one of the following is not included in 'the evil quartet' ? (a) Over exploitation (b) Pollution (c) Co-extinctions (d) Alien species invasions

Biodiversity loss occurs due to (i) habitat loss and fragmentation (ii) co-extinction (iii) over-exploitation (iv) alien species invasion. (a) (i) and (ii) (b) (i), (ii) and (iii) (c) (ii), (iii) and (iv) (d) (i), (ii), (iii) and (iv)