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.
