Home › Tamil Nadu SSLC (Class 10) › Biology › Plant and Animal Hormones › Among the five major plant hormones, which group…
Among the five major plant hormones, which group acts as growth inhibitors rather than growth promoters?
AAbscisic acid and ethylene
BAuxins and cytokinins
CGibberellins and auxins
DCytokinins and gibberellins
Answer & Solution
Correct answer: A. Abscisic acid and ethylene
1. The five plant hormones are auxins, cytokinins, gibberellins, abscisic acid and ethylene.
2. Auxins, cytokinins and gibberellins promote plant growth.
3. Abscisic acid and ethylene inhibit plant growth.
4. So the inhibitor pair is abscisic acid and ethylene.
_Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit 16 Plant and Animal Hormones "Types of Plant Hormones", p.237_
Related questions
In the female, the luteinizing hormone (LH) from the anterior pituitary mainly brings abouThe hormone thymosin, which stimulates the production and differentiation of lymphocytes, The mineralocorticoid aldosterone, secreted by the zona glomerulosa of the adrenal cortex,Epinephrine and norepinephrine, released during stress and emotion, are called emergency hA diabetes mellitus patient shows hyperglycemia, glycosuria, polyuria, polydipsia and polyIn the islets of Langerhans, glucagon and insulin are secreted respectively by which cellsRemoval of the parathyroid glands during a thyroidectomy lowers parathormone and produces An enlargement of the thyroid gland appearing as a swelling in the neck due to inadequate