Use the following information and figure to answer the question.
Aphids are Hemiptera that suck phloem liquid from plants. Ants are often seen tapping the posterior end of the aphid and collecting the liquid that is released from the aphid's digestive system. In an effort to understand this interaction, several researchers measure the survival rates of aphid populations when ants were present and when they were excluded. Their results are shown.

Which of the following conclusions is most likely correct?
A) Ants derive nourishment from the aphids.
B) Ants protect the aphids from predators.
C) Ants parasitize the aphids.
D) Ants feed the aphids.

Question

Use the following information and figure to answer the question.
Aphids are Hemiptera that suck phloem liquid from plants. Ants are often seen tapping the posterior end of the aphid and collecting the liquid that is released from the aphid's digestive system. In an effort to understand this interaction, several researchers measure the survival rates of aphid populations when ants were present and when they were excluded. Their results are shown.

Which of the following conclusions is most likely correct?
A) Ants derive nourishment from the aphids. 
B) Ants protect the aphids from predators. 
C) Ants parasitize the aphids. 
D) Ants feed the aphids.

Quizplus · Accepted Answer

The data shows that aphid survival rates are significantly higher in the presence of ants, suggesting that the ants are providing protection from predators. There is no evidence to suggest that the ants are deriving nourishment from or parasitizing the aphids. While the ants may be "tapping" the aphids, it is not clear that they are feeding them in any way.

Use the Following Information and Figure to Answer the Question