Figure 30.9A

-The effect of directional growth shown in the accompanying figure is known to be caused by ____.

A) thigmotropism
B) gravitropism
C) abscisic acid
D) salicylic acid
E) vernalization

Question

Figure 30.9A
 
-The effect of directional growth shown in the accompanying figure is known to be caused by ____.
 
A) thigmotropism 
B) gravitropism 
C) abscisic acid 
D) salicylic acid 
E) vernalization

Quizplus · Accepted Answer

Gravitropism is the growth movement by a plant or fungus in response to gravity. It directs parts of a plant to grow upwards or downwards, such as roots growing downward into the soil (positive gravitropism) and stems growing upward (negative gravitropism).

Figure 30.9A -The Effect of Directional Growth Shown in the Accompanying Figure