Ecosystem Question 67
67. The pyramid which cannot be inverted in a stable ecosystem is that of
(a) Biomass
(b) Number
(c) Energy
(d) All the above
Show Answer
Answer : c
Hints & Solutions
(c) Energy pyramid cannot be inverted because energy always flows in one direction only. According to 10% law of energy transfer given by Lindemann (1972), during transfer of energy from one trophic level to other there is always loss of energy in respiration and other activities. Only 10% of energy is transfered to net trophic level. So the amount of energy flow decreases with successive trophic levels.
