If a plant needs 10 hours of darkness to flow | vedclass

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(D) The plant described is a Short Day Plant $(SDP)$ because it requires a minimum of $10$ hours of darkness to flower.This $10$ hours is known as the

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$I$ and $II$

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(D) The plant described is a Short Day Plant $(SDP)$ because it requires a minimum of $10$ hours of darkness to flower.This $10$ hours is known as the critical dark period.For flowering to occur,the plant must be exposed to a dark period equal to or greater than the critical dark period.Condition $II$ provides exactly $10$ hours of darkness,which meets the requirement.Conditions $III$ and $IV$ provide less than $10$ hours of darkness,so the plant will not flower under these conditions.Therefore,the plant will flower under condition $II$.

If a plant needs $10$ hours of darkness to flower,identify the condition under which it will flower:
$I.$ $14$ hours day period
$II.$ $10$ hours dark period
$III.$ $9 \frac{1}{2}$ hours dark period
$IV.$ $9$ hours dark period
Choose the correct option:

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If a plant needs $10$ hours of darkness to flower,identify the condition under which it will flower:$I.$ $14$ hours day period$II.$ $10$ hours dark period$III.$ $9 \frac{1}{2}$ hours dark period$IV.$ $9$ hours dark periodChoose the correct option: