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Plants normally flowering in winter rema...

Plants normally flowering in winter remain vegetative in summer even if they are kept at winter temperature because

A

Transpiration rate becomes very high during summer

B

Laws of limiting factors are applicable in summer

C

Pollination fails to take place in summer

D

They do not get the required day length during summer

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The correct Answer is:
D
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TRUEMAN BIOLOGY-PLANT GROWTH AND DEVELOPMENT AND PLANT MOVEMENTS -MULTIPLE CHOICE QUESTIONS
  1. Tendrils exhibit/twining of tendrils is due to

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  2. Match list -(Plant hormones' ) with List -II (Typical physiological ef...

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

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

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

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

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  7. Consider the following statements 1. In climacteric fruits, ethylene...

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  8. Which one does not exhibit seed dormancy ?

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  9. Which of the following plant hormones is correctly matched with its fu...

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  10. A long day plant with critical day length of 14 hrs will flower under ...

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  11. Go through the following matches (i) Auxins - Tryptophan (ii) Et...

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  12. Read the following matches (i) Auxins - Promotes abscission of olde...

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  13. Go through the following matches (i) Cytokinis- Inhibits secondary ...

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  14. Go through the following statements (i) The most widely used compoun...

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  15. Go through the following matches (i) Abcisic acid - Delays senesce...

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  16. Go through the following statements (i) In geometric growth, followi...

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  17. Which one of the following statements is not correct regarding vivipar...

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  18. Which of the following is a correct statement regarding the plant grow...

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  19. Go through the following figure Choose the correct labelling.

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  20. Photoperiodism is associated with the formation of

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