Question: 110. Tropical regions show greatest level of species richness because
A. Tropical latitudes have remained relatively undisturbed for millions of years, hence more time was available for species diversification.
B. Tropical environments are more seasonal.
C. More solar energy is available in tropics.
D. Constant environments promote niche specialization.
E. Tropical environments are constant and predictable.
Choose the correct answer from the options given below:
(1) A, C, D and E only
(2) A and B only
(3) A, B and E only
(4) A, B and D only
Answer: Option (1)
Explanation:
Tropical regions have remained relatively undisturbed for long geological periods,
allowing more time for species diversification, so statement A is correct.
Tropical environments receive more solar energy throughout the year,
which increases primary productivity and supports a greater number of species,
so statement C is correct.
Environmental constancy in the tropics promotes niche specialization,
allowing many species to coexist, so statement D is correct.
Tropical environments are generally constant and predictable compared to temperate regions,
which favors stable ecological interactions and higher species richness, so statement E is correct.
Tropical environments are not highly seasonal, therefore statement B is incorrect.
Hence, the correct combination is A, C, D and E only.