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Fall of immature leaf is due to the deficiency of
Options
(a) sodium
(b) sulphur
(c) zinc
(d) phosphorus
Correct Answer:
zinc
Explanation:
Zinc plays an important role in the synthesis of tryphtophan which is precursor of auxin.Its deficiency causes immature fall of young leaves due to formation of abscission layer which is prevented by auxin and zinc plays an important role in auxin formation.Sulphur is a component of protoplasm and favours root formation.Phosphorus is essential constituent of DNA,RNA and nucleoproteins.It is an energy carrier and forms a part of ATP,ADP and NADP.
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- The 24 hour (diurnal) rhythm of our body such as the sleep-wake cycle
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Topics: Transport and Nutrition in Plants
(163)
Subject: Biology
(4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Biological control of pests is
- The 24 hour (diurnal) rhythm of our body such as the sleep-wake cycle
- Injury to adrenal cortex is not likely to affect the secretion of which one of the
- Which cells on grass leaves help in minimizing cuticular transpiration?
- Body temperature of many animals correspond to the environmental temperature.
Topics: Transport and Nutrition in Plants (163)
Subject: Biology (4253)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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