Question

which of the following is true about the efficiency of energy transfer in an ecosystem?
a. the more energy the organism requires, the more efficient the energy transfer.
b. all energy transfers have the same efficiencies.
c. the less energy the organism requires, the more efficient the energy transfer.
d. the most efficient energy transfers are in large, warm - blooded animals.

Explanation:

In an ecosystem, energy transfer efficiency is related to the energy requirements of organisms. Warm - blooded animals (endotherms) maintain a constant body temperature and need more energy. Large, warm - blooded animals have relatively efficient energy transfers compared to some others. Option a is incorrect because more energy requirement does not mean more efficient transfer. Option b is wrong as energy transfers do not have the same efficiencies. Option c is also incorrect as less energy requirement does not imply more efficient transfer.

Answer:

d. The most efficient energy transfers are in large, warm - blooded animals.