Question

What is the resource in the plant that aphids eat?

Answer 1

Answer: Aphids are herbivores. They suck plant juices out of the leaves, stems, or roots of plants. The juices they drink often have much more sugar than protein. Aphids have to drink so much sugary juice to get enough protein that they excrete a lot of the sugar.

Explanation:

Answer 2

I can confirm that it is correct.^
Aphids feed on soft stems, branches, buds and fruits. They pierce the stems and suck the nutrient rich sap from the plant leaving damaged flowers and fruits :)