Which of the following is an example of mechanical scarification?

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Multiple Choice

Which of the following is an example of mechanical scarification?

Explanation:
Mechanical scarification involves physically altering the seed coat to breach dormancy and allow water and gases to permeate. Rubbing seeds with sandpaper directly roughens or ablates the surface, creating openings that let moisture enter and trigger germination—this is the clear example of mechanical scarification. Soaking in water hydrates the seed without changing the coat, soaking in acid uses chemical action to weaken the coat, and chilling seeds triggers cold stratification, a dormancy-break process not based on physical abrasion.

Mechanical scarification involves physically altering the seed coat to breach dormancy and allow water and gases to permeate. Rubbing seeds with sandpaper directly roughens or ablates the surface, creating openings that let moisture enter and trigger germination—this is the clear example of mechanical scarification. Soaking in water hydrates the seed without changing the coat, soaking in acid uses chemical action to weaken the coat, and chilling seeds triggers cold stratification, a dormancy-break process not based on physical abrasion.

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