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Dr. F. Went noted that if coleoptile tip...

Dr. F. Went noted that if coleoptile tips were removed and placed on agar for one hour , the agar would produce a bending when placed on one side of freshly cut coleoptile stumps .Of what sighifcance is this exeriment

A

It made possible the isolation and exact identification of auxin

B

It is the basis for quantitative determination of small amounts of growth promoting substances

C

It supports the hypothesis that IAA is auxin

D

It demonstrated polar movement of auxins

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-PLANT GROWTH AND DEVELOPMENT-ASSIGNMENT (SECTION -C)
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  2. Which one of the following phytohormone is formed in response to ...

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  3. Dr. F. Went noted that if coleoptile tips were removed and placed on a...

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  4. During seed germination, apical hook formation and elongation of the a...

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  5. Through their effect on plant growth regulators, what do the temperatu...

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  6. Which one of the following generally acts as an antagonist to gibberel...

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  7. Vernalisation stimulates flowering in -

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  8. Photoperiodism was first characterized in

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  9. Phototropic curvature Is the resutt of uneven distribution of

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  10. Coiling of garden pea tendrils around any support is an example

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  11. One of the commonly used plant growth hormone in tea plantations is -

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  12. Root development is promoted by -

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  13. One of the synthetic auxin is

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  14. Which one of the following acids is a derivative of carotenoids?

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  15. Senescence as an active developmental cellular process in the growth a...

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  16. Importance of day length ( photoperiodism ) in flowering of plants was...

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  17. Foolish Seedling disease of rice led to the discovery of

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  18. Opening of floral buds into flowers, is a type of

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  19. Which one of the following pairs, is not correctly matched?

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  20. The wavelength of light absorbed by Pr form of phytochrome is

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