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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
Related Questions: - Reduction of NADP takes place in
- In purple and green bacteria oxygen is not evolved during photosynthesis because
- Heroin is extracted form
- Which one of the following fruits is parthenocarpic?
- Menstrual flow occurs due to decrease in level of hormone
Topics: Plant Growth and Development
(126)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Reduction of NADP takes place in
- In purple and green bacteria oxygen is not evolved during photosynthesis because
- Heroin is extracted form
- Which one of the following fruits is parthenocarpic?
- Menstrual flow occurs due to decrease in level of hormone
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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