Question

1. where would you most likely find nitrogen - fixing bacteria? mark only one oval. a. in leaves of trees b. on the roots of legumes c. on dust particles in the atmosphere d. in blue - green algae 17. the energy consumed by organisms mark only one oval. a. can be stored in fat and sugar molecules. b. remains constant at all trophic levels. c. undergoes magnification in food chains. d. is not partially lost during digestion. 18. which part of the energy pyramid has the least amount of energy? mark only one oval. top level middle two levels bottom level all levels contain equal amounts of energy.

Explanation:

1. Nitrogen - fixing bacteria form symbiotic relationships with legumes and convert atmospheric nitrogen into a usable form. So they are most likely found on the roots of legumes.
2. The energy consumed by organisms can be stored in fat and sugar molecules for later use. Energy is lost at each trophic level, not constant or magnified, and some is lost during digestion.
3. In an energy pyramid, energy decreases as we move up the trophic levels. The top - level (tertiary consumers) has the least amount of energy as only about 10% of energy is transferred from one trophic level to the next.

Answer:

1. B. on the roots of legumes
2. A. can be stored in fat and sugar molecules.
3. top level