Question

One of the lessons from an energy pyramid is that:

Options

• Only one-half of the energy in one trophic level is passed on to the next level.

• The energy lost as heat or in cellular respiration is 10% of the available energy of each trophic level.

• Ecological efficiency is highest for primary consumers.

• Eating grain-fed beef is an inefficient means of obtaining the energy trapped by photosynthesis.

Answer 1

Eating grain-fed beef is an inefficient means of obtaining the energy trapped by photosynthesis.

Explanation:

One of the lessons from an energy pyramid is that energy transfer between trophic levels is inefficient, with much energy lost as heat or used in metabolism. Hence, consuming grain-fed beef, which is a higher trophic level, results in significant energy loss compared to consuming plants directly. This shows inefficiency in obtaining energy trapped by photosynthesis through such means. The energy available decreases at higher trophic levels, making eating grain-fed beef energy inefficient.