Question
Length of the stem at time 0 is 20 cm. The arithmetic growth rate is 30 cm per day. What is the length of the stem at the end of the 7^ th day ?
NEET
Botany
Plant - Growth and Development
2026
NEET 2026 (Re-NEET)
NEET Botany Question (2026) — Solution
Options
- A. 460 cm
- B. 50 cm
- C. 170 cm
- D. 230 cm
Answer
D. 230 cm
Step-by-step solution
The equation for arithmetic growth is given by: L_t = L_0 + rt Where: L_t is the length at time t L_0 is the initial length at time t = 0 r is the arithmetic growth rate t is the time Given: L_0 = 20 cm r = 30 cm/day t = 7 days Substituting the given values into the equation: L_7 = 20 + 30 7 L_7 = 20 + 210 L_7 = 230 cm
Related: Botany — Plant - Growth and Development · All PYQ Banks