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Hypothetical plant hormones are
Options
(a) florigen
(b) vernalin
(c) florigen and vernalin
(d) auxin
Correct Answer:
florigen and vernalin
Explanation:
The commonly recognized classes of plant hormones are the auxins, gibberelins, cytokinins, abscisic acid, and ethylene, Circumstantial evidence suggest that flower initiation is controlled by hypothetical hormones called florigens, but these substances remain to be identified. Florigen means flower forming hormones. A German plant physiologist Georg Melchers had proposed the existence of a stimulus of vernalization and he termed it as vernalin. Vernalin has not been isolated so far so it still remains to be
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Topics: Plant Growth and Development
(126)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Which one of the following conditions correctly discribes the manner
- Which of the following is used to prevent bleeding in infants?
- Which of the following vitamins can’t be deposited inside the body?
- A chemical signal that has both endocrine and neural roles is ?
- Which one of the following statement is incorrect about menstruation?
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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