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What causes a green plant exposed to t...

What causes a green plant exposed to the light , on only one side , to bend towards the source of light as it grows ?

A

Light stimlates plant cells on the lighted side to grow faster

B

Auxin accumulates on the shaded side , stimulating

C

Green plants need light to perform photosynthesis

D

Green plants seek light because the are phototropic .

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The correct Answer is:
B
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AAKASH SERIES-PLANT GROWTH AND DEVELOPMENT -EXERCISE -III (PREVIOUS AIPMT/NEET QUESTIONS)
  1. The avena curvature is used for biosassay of

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  2. Auxins can be bioassayed by

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  3. What causes a green plant exposed to the light , on only one side ...

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  4. Typical growth curve in plants is

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  5. Which one of the following growth regulators is know as strees hor...

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  6. Dr. F.Went note that if coleoptile tips were removed and planced ...

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  7. During seed germination its stored food is mobilized by

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  8. Vernalisation stimulates flowering in

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  9. Throught their effects on plants growth regulator , what do the te...

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  10. Which one of the following generally acts as an antagonist to gibbe...

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  11. Root development is promoted by

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  12. One of the commoly used plant growth hormone is tea plantation is

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  13. Coiling of graden pea tendrils around any support is an example of

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  14. Phototropic curvature is the result of uneven distribution of

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

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  16. One of the synthetic auxn is

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  17. Senescence as an active developmental celluar process in the growth...

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  18. Importance of day length in flowering of plants was first shown in

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  19. The wavelenght of light absorbed by P(r) from of phytochrome is

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

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