LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

ECOLOGY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why can’t the top level contain a large number of organisms?
A
Because as energy moves from the bottom to the top level, less and less energy is available to higher levels.
B
Because the original energy from producers is the total energy available to all the organisms in the energy pyramid.
C
because only about ten percent of the energy available at one level is transferred to the next level.
D
all of the above
Explanation: 

Detailed explanation-1: -Q. Why can’t the top level contain a large number of organisms? Because as energy moves from the bottom to the top level, less and less energy is available to higher levels.

Detailed explanation-2: -There is only 10% flow of energy from one trophic level to the next higher level. The loss of energy at each step is so great that very little usable remains after four or five trophic levels. Hence only 4 to 5 trophic levels are present in each food chain.

Detailed explanation-3: -Because energy transfer between trophic levels is only about 10% efficient, it takes several organisms at a lower trophic level to support one organism at a higher trophic level.

There is 1 question to complete.