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Plant Growth and Development NEET PYQs

Class XI Biology • NCERT Based • NEET Practice

📘 Concept Based 📝 Exam Level 🤖 AI Explanations

Question 21 of 22

🟢 Re NEET 2026 📘 CLASS XI

Which of the following plant growth regulators promotes internode elongation prior to flowering in cabbage?

Gibberellins promote stem and internode elongation and induce bolting in rosette plants such as cabbage.

Question 22 of 22

🟢 Re NEET 2026 📘 CLASS XI

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 7th day?

Length = 20 + (30 × 7) = 230 cm.