Question

Plant hormones are produced in extremely low concentrations in plants to regulate the physiological processes and tropic movements:

1. Name one plant hormone responsible for the changes shown in the above picture.
2. Identify a hormone that has an opposite effect to the one depicted in the picture.
3. Give an example of a plant that shows Thigmotropism.

Answer 1

1. Abscisic acid, Ethylene
2. Auxin
3. Peas, Grapes, Ivy