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Plants deficient of element zinc, show i...

Plants deficient of element zinc, show its effect on the biosynthesis of plant growth hormone

A

abscisic acid

B

auxin

C

cytokinin

D

ethylene

Text Solution

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The correct Answer is:
B
Deficiency of zmc effects biosyntbesis of auxin. It is characterised by a reduction in internodal growth due to which plant develops in rosette habit. The leaves may also be small and distorted. These results are due to loss of capacity to produce Indole Acetic Acid (IAA)
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NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-Plant Growth and Development -Exercise
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  5. Which one prevents premature fall of fruit ?

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  6. Hormone that breaks dormancy of seeds/potato tuber is

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  7. Which of the folloewing is a long day plant

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  8. Protienaceous pigment which is the centre of the activities concerned ...

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  9. Which method makes the seed coat permeable and allows growth of embryo...

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  10. What reason will you assign for coconut milk used in tissue culture?

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  11. Geocarpic fruits are produced by

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  12. The closing and opening of the leaves of Mimosa pudica is due to

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  13. Which combination of gases is suitable for fruit ripending

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  14. The response of different organisms to environmental rhythms of light ...

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  15. A plant hormone used for inducing morphogenesis in plant tissure is ...

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  16. The pigment which mainly absorbs red and far-red radiation in plants, ...

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  18. What will be the effect on photochrome in a plant subjected to contino...

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  20. Ethylene gas is used for

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