Class 11 Biology Plant Physiology Plant Growth and Development
502
150 A method of breaking dormancy and allowing ample absorption of water is
(a)
Stratification
(b)
Scarification
(c)
Vernalisation
(d)
Devernalisation
Correct answer: (b)
Solution: A. Stratification: Seeds are moistened and exposed to
oxygen for variable period at low or high temperature.
B. Scarification: Hard, impermeable seed coat is weakened or ruptured
by filing, chipping, abosrbing hot water.
C. Vernalisation- The cooling of seed during germination in order to accelerate flowering when it is planted.
D. Devernalisation- The heating of seed during germination in order to deaccelrating flowering when it is planted.
So, the correct answer is 'Scarification'.
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Similar topics
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plant growth and development
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respiration in plants
mineral nutrition
morphology of flowering plants
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