Home
Class 12
BIOLOGY
There are four major causes of accelerat...

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

A

Over exploitation

B

Pollution

C

Co-extinctions

D

Alien species invasions

Text Solution

Verified by Experts

The correct Answer is:
B
The world is facing acceleration rates of species extinctions, largely due to human interference. There are four major causes collectively called as the evil quarter, it includes (i) Habitat loss and fragmentation, (ii) Oven exploitation, (iii) Alien species invasions and (iv) Co-extinctions.
Promotional Banner

Similar Questions

Explore conceptually related problems

Which of the following is not an invasive alien species in the Indian context? (a) Lantana (b) Cynodon (c) Parthenium (d) Eichhornia

The term ''the evil quartet'' is related with four major causes of (a) Forest loss (b) Population explosion (c) Air pollution (d) Biodiversity losses

Which one of the following is an endangered plant species of India? (a) Rauwolfia serpentina (b) Santalum album (Sandalwood) (c) Cycas beddonei (d) All of the above

______is the exploration of molecular, genetic and species-level diversity for gaining the products of economic importance. (a) Exploitation (b) Bioprospecting (c) Co-extinction (d) Patenting

When a species becomes extinct, the plant and animal species associated with it in an obligatory way also become extinct. This phenomenon is referred to as (a) fragmentation (b) alien species invasion (c) over-exploitation (d) co-extinction

In the reaction, A+ 2B rarr 3C+D which of the following expression does not describe changes in the. concentration of various species as a function of. time:

Introduction of alien species into new area poses a threat to extinction of indigenous species due to (a) their high nutrient requirement (b) their symbiotic relationship (c) absence of their natural predators (d) more intraspecific competition.

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

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.