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ABA (Abscisic Acid) is called a stress h...

ABA (Abscisic Acid) is called a stress hormone.
(a) How does this hormone overcome stress conditions ?
(b) From where does this hormone get released in leaves ?

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(a) ABA hormone gives message to stomata to close down when there is scarcity of water in a plant. This way the waste of water is decreased by transpiration. Moreover it provides capability to plants to withstand various stresses.
(b) This hormone is transported in leaves from tip of the leaf.
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KUMAR PRAKASHAN-TRANSPORT IN PLANTS -Section-E NCERT Exemplar (Short Answer)
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