Question 40
Feeding Relationships and Energy FlowThe amount of energy passed from one trophic level to the next decreases because
- A.many organisms are present at the first trophic level
- B.many organisms occur at the higher trophic level
- C.more energy is conserved at lower trophic levels
- D.parts of the organisms remain unutilised at each trophic level
Show the answer and explanation
Answer: D (parts of the organisms remain unutilised at each trophic level)
Explanation
At each level much energy is lost: some parts are not eaten or digested, and much is used in respiration and lost as heat.