Gibberellic acid was discovered by:
Correct answer: C. Yabuta and Hayashi
- A. Hoshimata and Rappaport
- B. Donoho and Walker
- C. Yabuta and Hayashi
- D. Litrochet and Dolk
Explanation
Gibberellin was first discovered in 1935 by Teijiro Yabuta and Hayashi. It was isolated from fungus Gibberella fujikuroi and hence isolate was given gibberellin name. It is a plant growth regulator. It is involved in various processes like stem elongation, germination, dormancy, leaf and fruit senescence, etc.
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About Coordination and Control
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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