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Which of the following inhibits the growth of lateral auxillary buds?
Options
(a) auxin
(b) ethylene
(c) cytokinin
(d) gibberellin
Correct Answer:
auxin
Explanation:
Apical dominance is the phenomenon of suppression of growth in nearby lateral buds by the presence of apical bud. Removal of apical bud causes sprouting of lateral buds. However, if a paste of auxin is painted on the cut end of the decapitated shoot, the lateral bud remain inhibited, as if the apical bud is present. It clearly indicates that it is the auxin which is responsible for apical dominance.
Related Questions: - A few drops of sap were collected by cutting across a plant stem by a suitable
- Glycolysis occurs in which cells
- A somatic cell that has just completed the Sphase of its cell cycle, as compared
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- Which of the following hormones does not contain a polypeptide?
Topics: Plant Growth and Development
(126)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A few drops of sap were collected by cutting across a plant stem by a suitable
- Glycolysis occurs in which cells
- A somatic cell that has just completed the Sphase of its cell cycle, as compared
- The gynoecium consists of many free pistils in flowers of
- Which of the following hormones does not contain a polypeptide?
Topics: Plant Growth and Development (126)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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