Question

Read the following statements regarding ecological pyramids and choose the correct answer.
a. Relationship between organisms at different trophic levels is expressed in terms of number, biomass and energy.

b. Any calculations of energy content, biomass or number has to include one group of organisms at that trophic level.

c. In most ecosystems, all the pyramids of number, biomass and energy are upright.

d. The pyramid of biomass in sea is generally inverted.

e. Pyramid of energy is always inverted and can never be upright.

• A. b and e are wrong
• B. a, c and d are wrong
• C. a is wrong
• D. a and e are wrong

Answer 1

The correct option is A b and e are wrong

Statement b
While doing any calculations of energy content, biomass or number has to include all organisms at that trophic level. Calculations done by considering a few organisms will not be true.
Hence, the given statement in option (b) is incorrect.

Statement e
Pyramid of energy is always upright and can never be inverted because the energy of the lower trophic level is always more than the higher trophic level.
Hence, the given statement in option (e) is incorrect.

Final answer
(C) b and e are wrong