Question

Choose the correct answers from the alternatives given :
One of the lessons from an energy pyramid is that

• A. only one-half of the energy in one trophic level is passed on to the next level
• B. the energy lost as heat or in cellular respiration is 10% of the available energy of each trophic level
• C. ecological efficiency is highest for primary consumers
• D. eating grain-fed beef is an inefficient means of obtaining the energy trapped by photosynthesis

Answer 1

The correct option is D eating grain-fed beef is an inefficient means of obtaining the energy trapped by photosynthesis

An energy pyramid is the graphical representation of energy flow in a particular community. The different trophic levels represent a different group of animals. Here only ten percent of the energy is passed on to the next trophic level. As the organism of one trophic level is consumed by the organism of the next trophic level, energy decreases as it goes up the trophic level. So, the correct answer is "eating grain-fed beef is an inefficient means of obtaining the energy trapped by photosynthesis".