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Nicotiana tabacum, a short plant, when e...

Nicotiana tabacum, a short plant, when exposed to more than the critical period of light fails to flower. Explain.

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Short day plants require continuous and uninterrupted critical dark phase for flowering.
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Nicotiana tobacum, a short day plant , when exposed toi more than critical period of light fails to flower .Explain.

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Knowledge Check

  • Plants requiring exposure to light for less than the critical photoperiod for flowering are

    A
    LDP
    B
    DN
    C
    IDP
    D
    SDP

  • Which plant will require light period more than critical length?

    A
    Chrysanthemum
    B
    Bryophyllum
    C
    Triticum
    D
    Spinacia

  • Assertion : Soyabean and sugarbeet flower when they are exposed to a photoperiod shorter than critical period. Reason : Most of winter flowering plants are LDP.

    A
    If Both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1)
    B
    If both Assertion and reason are true but the reason is not the correct explanation of the assertion, then mark (2).
    C
    If Assertion is true statement but reason is false, then mark (3)
    D
    If both Assertion and reason are false statements, then mark (4).

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    If a short day Plant (SDP) is exposed to Far red light in their dark period then, Flowering is :-

    Four potted plants I, II, III, and IV (of short day plant, which has the critical period of 14 hours) are taken and exposed to light for different time periods as listed in the given table. Which potted plant will show flowering after exposure to light?

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    Four potted plants (I,II, III, and IV) of a short day plant, which has the crictical period of 14 hours, are taken and exposed to light for different time periods. The light periods given are listed in the table. |{:("Potted plant","Photoperiod"),(I,10hrs),(II,15hrs),(III,16hrs),(IV,20 hrs):}:| Which potted plant will show flowering after exposure to light?

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