The synthesis and release of abscisic acid in a plant is response to:
Correct answer: A. Water deficit
- A. Water deficit
- B. Oxygen deprivation
- C. Salt stress
- D. Herbivory
Explanation
It promotes closing of stomata under conditions of water stress (wilting).
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Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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