What do results of research on gravitropic responses of roots and stems show?
A)Different tissues have the same response to auxin.
B)The effect of a plant hormone can depend on the tissue.
C)Some responses of plants require no hormones at all.
D)Light is required for the gravitropic response.
E)Cytokinin can only function in the presence of auxin.

Question

Quizplus · Accepted Answer

Research on gravitropic responses of roots and stems has shown that the effect of a plant hormone, such as auxin, can depend on the tissue. For example, auxin causes bending towards gravity in stems but inhibits growth in roots. This indicates that different tissues can have different responses to the same hormone.

What Do Results of Research on Gravitropic Responses of Roots