Choose the correct term for identifying each consumer in the trophic levels.

Question

Level 1:
Answers for level 1:
A. primary consumers.
B. tertiary consumers.
C. producers.
Level 2:
Answers for level 2:
A. Secondary consumers.
B. tertiary consumers.
C. Primary consumers.
Level 3:
Answers for level 3:
A. primary consumers.
B. producers.
C. tertiary consumers.
Level 4:
Answers for level 4:
A. Primary consumers.
B. Secondary consumers.
C. Producers.
Level 5:
Answers for level 5:
A. producers.
B. heat.
C. consumers.

Based on the energy pyramid above, about how much energy is used by the organisms at each level?
A. 25%
B. 50%
C. 75%
D. 90%

Answer 1

To answer your questions, let's first clarify the trophic levels:

1. Level 1: This level consists of producers (usually plants), which convert sunlight into energy through photosynthesis. Correct term: C. producers.

2. Level 2: This level consists of primary consumers (herbivores) that eat the producers. Correct term: C. Primary consumers.

3. Level 3: This level consists of secondary consumers (carnivores that eat primary consumers). Correct term: A. primary consumers. (But actually in this context should be A. Secondary consumers as it refers to those eating primary consumers.)

4. Level 4: This level consists of tertiary consumers (carnivores that eat secondary consumers). Correct term: B. Secondary consumers. (Again, this can be a bit confusing as tertiary consumers are those at this level.)

5. Level 5: This level might refer to the total consumers or higher trophic levels that consume the organisms. Correct term: C. consumers.

Now, regarding the energy used by the organisms at each trophic level, according to the rule of thumb in ecology, only about 10% of the energy from one trophic level is transferred to the next level. Therefore, about 90% of the energy is lost as heat, used in metabolic processes, or not consumed.

So the answer to your question about how much energy is used by the organisms at each level is: D. 90%.