Question

The movement of energy and nutrients through living systems differs in what way?

• A. Energy recycles while nutrients flow in two directions.
• B. Nutrients recycle while energy flows in one direction.
• C. Nutrients are lost as heat while energy forms chemical compounds.
• D. Nutrients are constantly available while energy is limited.
• E. Nutrients are lost as heat while energy is limited.

Answer 1

Answer: (B)

Nutrients recycle while energy flows in one direction.

Energy is passed from one trophic level to the next trophic level. Hence, energy flows in one direction through successive trophic levels in a food chain. Nutrients are produced from the matter. The matter may be organic or inorganic. The organic and inorganic matter is produced, exchanged, and moved within the ecosystem and this is called cycling. Hence, nutrients are recycled.

So, the correct answer is option B.