Question: 124. These are regarded as major causes of biodiversity loss :
A. Over exploitation
B. Co-extinction
C. Mutation
D. Habitat loss and fragmentation
E. Migration
Choose the correct option :
(1) A, C and D only
(2) A, B, C and D only
(3) A, B and E only
(4) A, B and D only
Answer: Option (4)
Explanation:
Over exploitation of natural resources leads to decline and extinction of many species,
making it a major cause of biodiversity loss.
Co-extinction occurs when the extinction of one species results in the extinction of another species
that is dependent on it, such as host–parasite or plant–pollinator relationships.
Habitat loss and fragmentation destroy natural ecosystems and isolate populations,
and this is considered the most significant cause of biodiversity loss.
Mutation is a natural genetic process and does not directly cause large-scale loss of biodiversity.
Migration is a natural biological phenomenon and does not lead to biodiversity loss.
Therefore, the major causes of biodiversity loss are A, B and D.