Botany-Growth Regulators
NEET Botany Growth Regulators MCQ Question
Type: MCQ-numerical-Hard-Class 11
If a rice seedling treated with gibberellic acid shows an increase in height from 10 cm to 25 cm over a period of 5 days, what is the average daily growth rate in cm per day?
A
3 cm/day
B
2 cm/day
C
5 cm/day
D
5 cm/day
Correct Answer
Option A
Detailed Explanation
The increase in height is 25 cm - 10 cm = 15 cm over 5 days. Therefore, the average daily growth rate is 15 cm / 5 days = 3 cm per day. This calculation aligns with the context that gibberellic acid promotes growth, as seen in E. Kurosawa's observations.
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