Botany-Phases of Growth
NEET Botany Phases of Growth MCQ Question
Type: MCQ-numerical-Hard-Class 11
If a plant's root length grows from 5 cm to 25 cm in 10 days, and this growth follows an arithmetic pattern, what is the growth rate (r) per day?
A
2 cm/day
B
4 cm/day
C
1 cm/day
D
5 cm/day
Correct Answer
Option A
Detailed Explanation
In arithmetic growth, the formula L_t = L_0 + rt is used. With L_t = 25 cm, L_0 = 5 cm, and t = 10 days, substituting these values gives 25 = 5 + 10r. Solving for r gives r = 2 cm/day.
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