Question

4. How could an increase in a secondary consumer affect producers?
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20 points
It could cause the population of the producers to increase, because they now have less primary consumers eating them.
It could cause the population of the producers to decrease, because they now have more primary consumers eating them.
It could cause the population of the producers to decrease by half
Secondary consumers have no effect on producers
5. Consider a forest ecosystem. If the producer level has 1,000 Joules of energy, what amount of energy would be found in the primary consumer level?
*
20 points
10 Joules
100 Joules
1,000 Joules
10,000 Joules

Answer 1

4. It could cause the population of the producers to increase, because there are fewer primary consumers eating them.
Explanation: More secondary consumers reduce primary consumer numbers, lowering grazing pressure on producers.

5. 100 Joules.
Explanation: About 10% of energy is transferred between trophic levels, so 10% of 1,000 J = 100 J.