Grapes Growing on a Vine Are Observed to Shrink Slightly

Multiple Choice

Grapes growing on a vine are observed to shrink slightly during the day, only gaining in size at night. You decide to do an experiment where you sever the phloem, but not the xylem, of the stem that supplies a cluster of grapes. You expect to see that for the grapes in the experimental cluster:

A) grape size increases during the day and shrinks at night.
B) shrinkage during the day becomes more noticeable, and while size recovers at night, it no longer increases.
C) all changes in size cease.
D) shrinkage during the day stays the same, and while size recovers at night, it no longer increases.