If a Plant is Living Under Conditions That Limit Root

Question

If a plant is living under conditions that limit root growth, shoot growth is
A) limited as well, due to less cytokinin being produced by the root.
B) unaffected by the amount of root growth.
C) stimulated, due to less cytokinin being produced by the root.
D) stimulated, due to more auxin being produced by the apical meristem.
E) limited as well, due to more auxin being produced by the apical meristem.

Accepted Answer

Cytokinins are hormones produced in the roots that promote shoot growth. If root growth is limited, less cytokinin is produced, which in turn limits shoot growth.