The following diagram shows a typical food pyramid:

Question

If 100,000 kJ of energy is available to the producers, how much energy is available to the secondary consumers in this food pyramid?

(1 point)
Responses

1,000 KJ
1,000 KJ

100 KJ
100 KJ

10,000 KJ
10,000 KJ

10 KJ
10 KJ

Answer 1

In a typical food pyramid, energy decreases as you move up the levels due to energy loss at each trophic level, primarily through metabolic processes and heat.

Generally, the energy transfer between trophic levels can be estimated as follows:

• Producers (1st trophic level) get 100% of the energy.
• Primary consumers (2nd trophic level) receive about 10% of the energy from producers.
• Secondary consumers (3rd trophic level) receive about 10% of the energy from primary consumers.

If there are 100,000 kJ available to the producers:

1. Energy available to primary consumers = 100,000 kJ × 10% = 10,000 kJ.

2. Energy available to secondary consumers = 10,000 kJ × 10% = 1,000 kJ.

Thus, the correct response is:

1,000 KJ