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Plants which require the exposure to lig...

Plants which require the exposure to light for a period exceeding a well defined critical duration for howering are called 

A

Short day plants

B

Long day plants

C

Day neutral plants

D

Short long day plants

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Verified by Experts

The correct Answer is:
B
Plants which require the exposure to light for a period exceeding a well defined critical duration for flowering are called long day plants.
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A2Z-PLANT GROWTH AND DEVELOPMENT-Section A : Topicwise Questions Topic 5 : Photoperiodism And Vernalisation
  1. Would a defoliated plant respond to photoperiodic cycle?

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  2. Read the following statements and iind out the incorrect statements.  ...

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  3. Plants which require the exposure to light for a period exceeding a we...

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  4. Plants which must be exposed to light for a period less than the criti...

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  5. Plants in which there is no such correlation between exposure to light...

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  6. Recognise the figure and find out the correct labelling.

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  7. Fill in the blanks:  (1) Wheat, barley end rye have two kinds of vari...

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  8. Certain plants need to be exposed to low temperature ' so as to hasten...

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  9. Seeds of winter varieties are benefitted by technique

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  10. Biennials get changed into annuals by

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  11. Which ones are long day plants

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  12. Which of the following is a short day plant

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  13. One set of plants exposed to 12 hr day and 12 hr night llowered. The o...

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  14. Physiologically active form of phytochrome is

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  15. When the dark period of short day plants is intrrupted by a brief expo...

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  16. Phytochrome was isolated by

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  17. Vemalisation is

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  18. What is true about phytochrome ?

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  19. Flowering in short day plants is induced by

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  20. Photoperiodic stimulus is picked up by

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