What happens if a growing shoot's tip breaks off?
A)auxin levels rise in the stem and prevent lengthening of lateral buds
B)cytokinin levels drop in the stem and inhibit branch development
C)cytokinin levels rise in the stem and stimulate lateral bud growth
D)auxin moves into lateral buds and promotes cell division
E)cytokinin is transported away from bud tips and down the stem

Question

Quizplus · Accepted Answer

When the tip of a growing shoot breaks off, cytokinin levels rise in the stem and stimulate lateral bud growth. This is because the apical meristem, located in the tip, produces auxin which suppresses the growth of lateral buds. When the tip is removed, the concentration of auxin decreases and cytokinin levels rise, promoting the growth of the lateral buds.

What Happens If a Growing Shoot's Tip Breaks Off