Class 11 Biology Plant Physiology Plant Growth and Development



Prechilling treatment to break seed dormancy is
(a)
Scarification
(b)
Vernalisation
(c)
Impaction
(d)
Startification
Correct answer: (d) 
Solution: 

A. Scarification: Hard, impermeable seed coat is weakened or ruptured by filing, chip­ping, hot water 

B. Vernalisation- The cooling of seed during germination in order to accelerate flowering when it is planted.

C Impaction- It means to strike something with force. This method implies to the vigorous shaking of the seeds

D. Stratification: Seeds are moistened and exposed to oxygen for variable period at very low (chilling) or high temperature.

So, the correct answer is 'Stratification'.


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Connecting you to a tutor in 60 seconds.
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plant growth and development
transport in plants
respiration in plants
mineral nutrition
morphology of flowering plants