Question

potted plants such as a potted amaryllis can be forced into dormancy by withholding ______.
a. light
b. warmth
c. fertilizer
d. water

Explanation:

To determine the answer, we analyze the process of forcing potted plants (like amaryllis) into dormancy. Withholding water is a common method to induce dormancy in plants, as water is essential for active growth; reducing or stopping water supply can trigger dormancy. Light, warmth, and fertilizer withholding are less typical for inducing dormancy compared to water withholding in this context.

Answer:

d. water