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Abscisic acid controls
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Before a leaf fall, a special zone of cells is formed at the base of the pedicel or petiole. This zone is called abscission zone. It is delimited by a protection layer on the stem side and a separation layer on the organ side. The leaf is ultimately separated and phenomenon is called abscission. ABA is also a growth inhibitor. It regulates the dormancy of seeds and buds perhaps by inhibiting the growth process. The ABA level decreases in the whole seed as their dormancy is broken.
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| Question Text | Abscisic acid controls |
| Topic | Plant Growth and Development |
| Subject | Biology |
| Class | Class 11 |
| Answer Type | Text solution:1 |
| Upvotes | 143 |
