Question

When conditions are unfavorable, which of these plant hormones prevents seed germination?

a. auxin b. gibberellins

c. Abscisic acid d. cytokinins

In order to ripen fruit, it is advised to spray plants with which hormones?

a. ethylene b. auxins

c. gibberellins d. cytokinins

A scientist has placed a plant under a direct light source. After some time, he notices that the stem has bent in the direction of the light. Which hormone is primarily responsible for this tropism?

a. gibberellins b. auxin

c. ethylene d. cytokinins

Answer 1

Answer:

1. Abscisic acid.

2. Ethylene. 3. Auxin.

Answer 2

Answer:

The answer is as follow

1-c) Abscisic Acid

2-d) Cytoknins

3-b) Auxin