Ants Are Often Observed with Aphids, Small Insects That Feed

question 9

Multiple Choice

Ants are often observed with aphids, small insects that feed on plants. The ants obtain nutritious nectar from the aphids. A biologist wants to test whether ants and aphids are mutualists. She removes ants from groups of aphids and compares them to controls. Which of the following outcomes is consistent with a mutualistic relationship between ants and aphids?

• A) Aphids consume more of the plant.
• B) Plants with aphids produce fewer seeds.
• C) More aphids are eaten by herbivores.
• D) Fewer aphids are eaten by herbivores.

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