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What causes a green plant exposed to the...

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

A

Green plants seek light because they are phototropic

B

Light stimulates plant cells on the light- ed side to grow faster

C

Auxin accumulates on the shaded side, stimulating greater cell elongation there

D

Green plants need light to perform pho- tosynthesis

Text Solution

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The correct Answer is:
C
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TRUEMAN BIOLOGY-PLANT GROWTH AND DEVELOPMENT AND PLANT MOVEMENTS -MULTIPLE CHOICE QUESTIONS
  1. Bolting hormone is

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  2. Auxanometer is used to measure plant organ

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

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  4. Through their effect on plant growth regiulators, what do the temperat...

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  5. Apical dominance is caused by

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  6. The natural plant hormone isolated from corn kernels and coconut milk ...

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  7. Low temperature treatment to speed up the process of flowering is refe...

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  8. During seed germination, its stored food is mobilised by

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  9. Which one of the following plant hormone (phytohormone ) Is known as a...

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  10. A few normal seedlings of tomato were kept in a dark room. After a few...

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

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  12. Minerals known to be required in large amounts for plant growth includ...

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  13. The rate of growth of any organism follows Or Typical growth curve...

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

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  15. Auxin can be bioassayed by

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  16. The Avena curvature is used for bioassay of

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  17. You are given a tissue with its potential for differentiation in an ar...

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  18. Phytochrome is

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  19. study the four statements (A-D) given below and select the two correct...

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  20. Which of the following prevents falling of fruits OR Fruit and lea...

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