Which of the following is not a man-made meth | vedclass

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(C) Seed dormancy is a state in which seeds are prevented from germinating even under favorable environmental conditions.$(I)$ Mechanical scarificatio

Vedclass · Accepted Answer

Only $II$

Vedclass · Answer

(C) Seed dormancy is a state in which seeds are prevented from germinating even under favorable environmental conditions.$(I)$ Mechanical scarification (using knives or sandpaper) is a man-made method to break the hard seed coat.$(II)$ Passage of seeds through the digestive tract of animals is a natural process (biological scarification) that helps in breaking dormancy,not a man-made method.$(III)$ Chilling conditions (stratification) are often used to remove inhibitory substances,which is a technique applied by humans in nurseries or laboratories.$(IV)$ Application of chemicals like gibberellic acid and nitrates is a man-made method to stimulate germination.Therefore,only $(II)$ is a natural process and not a man-made method.

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