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| 1. |
(a) Name the gaseous plant hormone. Describe its three different actions in plants. (b) Which hormone is known as stress hormone in plants ? Why? |
| Answer» Solution :Abscisic acid is KNOWN as STRESS HORMONE. It increases the tolerance of plants to VARIOUS kinds of stress. (Eg. During WATER stress and drought conditions. Abscisic acid causes stomatal closure. | |