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A long day plant with critical day lengt...

A long day plant with critical day length of 14 hrs will flower under which of the following treatments?

A

1) 7 hrs light-2 hrs darkness-3 hrs light-5 hrs darkness-7 hrs light

B

2)5 hrs light-9 hrs darkness-a hrs light-2 hrs darkness

C

3)11 hrs darkness-13 hrs light

D

4)6 hrs light-6 hrs darkness-7 .5 hrs light- 4. 5 hrs darkness

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The correct Answer is:
A
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TRUEMAN BIOLOGY-PLANT GROWTH AND DEVELOPMENT AND PLANT MOVEMENTS -MULTIPLE CHOICE QUESTIONS
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  2. Which of the following plant hormones is correctly matched with its fu...

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

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

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

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

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

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

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  9. Go through the following statements (i) In geometr,ic growth, follow...

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  10. Which one of the following statements is not correct regarding· vivipa...

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

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

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  13. Photoperiodism is associated with the formation of

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

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

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

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  17. Match the items in Columns- I with Column-II and choose the correct op...

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  18. One of the synthetic auxin is 1. GA 2. IBA 3. NAA 4. IAA

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  19. Cytokinins which have specific effect in cytokinesis are modified form...

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  20. Photoperiodism was first characterized in

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