In the summer, when plants are storing sugar that is being produced in their leaves and roots, the root is the ________ and the leaves are the ________.

Question

Quizplus · Accepted Answer

In the summer, when plants are storing sugar, the root acts as a phloem sink, taking in the sugar produced by the leaves and storing it. Conversely, the leaves act as a phloem source, producing and exporting the sugar. Therefore, the best choice is D (phloem sink; phloem source).

In the Summer, When Plants Are Storing Sugar That Is