Question

question 1 points 3 why do organisms at the top of the energy pyramid get less energy? ∘ as the food chain gets longer, more omnivores are involved in the transfer of energy. ∘ as the food chain gets longer, less energy is transferred from one organism to the next. ∘ as the food chain gets longer, more energy is available to each type of consumer. ∘ as the food chain gets longer, fewer producers are available to create energy.

Explanation:

To determine the correct answer, we analyze each option based on the concept of energy transfer in a food chain (10% energy transfer rule):

• Option 1: The number of omnivores isn't the reason for less energy at the top. Energy loss is due to metabolic processes, not omnivores' involvement. Eliminate.
• Option 2: In a food chain, only about 10% of energy is transferred from one trophic level to the next. Most energy is lost as heat or used for metabolism. So, as the food chain (trophic levels) increase, less energy is passed on, leading to top organisms getting less energy. This matches the concept.
• Option 3: Energy availability decreases, not increases, with longer food chains. Eliminate.
• Option 4: Producers' availability isn't the factor. Energy loss is due to transfer inefficiencies, not fewer producers. Eliminate.

Answer:

B. As the food chain gets longer, less energy is transferred from one organism to the next.