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 survival rates of aphid populations are higher when ants are present, indicating that ants are likely protecting the aphids from predators. Nourishment or parasitization of aphids by ants is not supported by the given information. Although ants are seen tapping the posterior end of the aphid and collecting the liquid that is released, this does not necessarily mean that ants are feeding the aphids.

Use the Following Information and Figure to Answer the Question