Botany-Seed Dormancy
NEET Botany Seed Dormancy MCQ Question
Type: MCQ-numerical-Hard-Class 11
If a seed requires mechanical abrasion to break its dormancy, and it is known that microbial action reduces the dormancy period by 30%, what would be the mechanical abrasion's effect on a seed that initially had a dormancy period of 100 days?
A
Reduces dormancy period to 70 days
B
Reduces dormancy period to 50 days
C
Reduces dormancy period to 90 days
D
Has no effect on dormancy period
Correct Answer
Option A
Detailed Explanation
Mechanical abrasion, like microbial action, breaks the seed coat barrier, reducing the dormancy period by 30%. Thus, from 100 days, it is reduced to 70 days.
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