Class 11 · Plant Growth and Development

ABA Role in Seed Dormancy — NEET Biology

✅ Asked in NEET 2024
✅ NEET 2024 PYQ · Asked 2 times

Match List-I with List-II: (NEET 2024) List-I: A. Abscisic acid B. Ethylene C. Gibberellin D. Cytokinin List-II: I. Promotes female flowers in cucumber II. Helps seeds to withstand desiccation III. Helps in nutrient mobilisation IV. Promotes bolting in beet, cabbage etc. Choose the correct answer from the options given below:

Q1 of 2NEET 2024

Match List-I with List-II: (NEET 2024) List-I: A. Abscisic acid B. Ethylene C. Gibberellin D. Cytokinin List-II: I. Promotes female flowers in cucumber II. Helps seeds to withstand desiccation III. Helps in nutrient mobilisation IV. Promotes bolting in beet, cabbage etc. Choose the correct answer from the options given below:

Q2 of 2NEET 2020

Which of the following is not an inhibitory substance governing seed dormancy? (NEET 2020)

Answer & NCERT explanation

Correct answer: C A-II, B-I, C-IV, D-III

This is another matching question where the correct answer is (c) A-II, B-I, C-IV, D-III. These matching questions typically test knowledge of plant hormones and their associated functions, sources, or effects. Without the specific lists provided, students should review the key functions and characteristics of major plant hormones for such questions.

Read more NCERT concept on the PYQ

📖 NCERT Source

By inducing dormancy, ABA helps seeds to withstand desiccation and other factors unfavourable for growth. In most situations, ABA acts as an antagonist to GAs.

NCERT Biology · Class 11 · Chapter 13 · Paragraph 47
How NTA Uses This Concept

ABA (Abscisic Acid) induces dormancy in seeds, protecting them from desiccation and unfavourable environmental conditions. This is a KEY NEET concept tested multiple times (2020, 2024). Students often confuse ABA's role with gibberellins (GAs)—remember that ABA and GA are ANTAGONISTS: ABA promotes dormancy while GA promotes growth. To avoid the trap: when a question asks about seed dormancy, stress resistance, or water loss prevention, the answer is ABA, NOT gibberellins. Always recall that ABA's primary role in seeds is protective dormancy, not growth stimulation.

❓ Frequently Asked Questions
What does NCERT say about By inducing dormancy ABA?
By inducing dormancy, ABA helps seeds to withstand desiccation and other factors unfavourable for growth. In most situations, ABA acts as an antagonist to GAs.
Has this concept appeared in NEET?
Yes — appeared in NEET 2024, 2020. ABA helps seeds withstand desiccation and dormancy explicitly stated
Which chapter is this from?
Plant Growth and Development, Class 11 NCERT Biology.

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88/90
of the NEET 2026 Biology paper matched from the MedicNEET question bank

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