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A long day plant flowers only when it is...

A long day plant flowers only when it is exposed to

A

1)Red light

B

2)Light more than critical day length

C

3)Light equal to critical day length

D

4)Light less than critical day length

Text Solution

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The correct Answer is:
B
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TRUEMAN BIOLOGY-PLANT GROWTH AND DEVELOPMENT AND PLANT MOVEMENTS -MULTIPLE CHOICE QUESTIONS
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  2. Maryland mammoth variety of tobacco is a

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  3. A long day plant flowers only when it is exposed to

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  4. Senescence of leaves can be delayed and shelf life of fruits can be in...

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  5. Common inhibitor of germination is

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  7. Coconut milk contains:

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  9. Pruning of plants promotes branching because the axillary buds get se...

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  10. One set of a plant was grown at 12 hours day and 12 hours night period...

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  11. Leaf fall occurs in a tree when there is increase in concentration of

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  12. Gibberellins can promote seed germination because of their influence o...

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  13. Touch me not belongs to

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  14. Tendrils exhibit/twining of tendrils is due to

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  15. Match list -(Plant homeone ) with List -II (Type -cal physiological ef...

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  16. Plants normally flowering in winter remain vegetative in summer even i...

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  17. Which of the following statements are correct? 1.Gibberellins can su...

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  18. Match list -I List-II and select the correct answer using the codes gi...

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  19. The shoot branching depends upon the development of axillary buds but ...

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