Question

Which of the following correctly describes the relationship of different organisms in an ecosystem?
A.
All plants depend on animals as their only energy source.
B.
Some animals receive energy from plants, while others receive energy from other animals.
C.
Plants and animals both receive energy from the Sun that they use to make food.
D.
All animals consume plants as their only energy source.

Answer 1

B

Some animals (herbivores) get energy by eating plants, while others (carnivores and omnivores) get energy by eating other animals (or both).
(A) and (D) are false because not all plants depend on animals and not all animals eat only plants. (C) is false because animals do not use sunlight to make their own food—plants (producers) do.