Class 11 Biology Chapter 13 – Plant Growth and Development Study Material PDF Download | English & Tamil Medium | NEET 2027 Preparation | NEET Biology Tamil
Class 11 Biology Chapter 13 – Plant Growth and Development Study Material PDF Download | English & Tamil Medium | NEET 2027 Preparation | NEET Biology Tamil
Download Class 11 Biology Chapter 13 Plant Growth and Development Notes PDF in English & Tamil Medium for NEET 2027. NCERT notes, PYQs, MCQs & solutions.
Introduction
Welcome to NEET Biology Tamil – your free learning platform for NEET, CBSE, and Tamil Nadu State Board Biology preparation.
In this post students can download Class 11 Biology Chapter 13 – Plant Growth and Development study materials in both English Medium and Tamil Medium.
These materials are useful for NEET 2027 aspirants, CBSE students, and Tamil Nadu State Board students.
📚 Chapter Name
English:
Class 11 Biology Chapter 13: Plant Growth and Development
Tamil:
வகுப்பு 11 உயிரியல் பாடம் 13 : தாவர வளர்ச்சி மற்றும் மேம்பாடு
📌 Available Study Materials
✅ Complete Chapter Notes – English Medium
✅ முழுமையான குறிப்புகள் – தமிழ் வழி
✅ NCERT Based NEET Notes
✅ Important Definitions
✅ Important Diagrams
✅ Important Tables
✅ Mind Maps / Short Notes
✅ Previous Year NEET Questions
✅ Chapter Wise Practice MCQs
✅ Answer Key with Detailed Solutions
About Chapter – Plant Growth and Development
Plant Growth and Development explains the process of plant growth, differentiation and the role of plant hormones.
Important concepts covered:
🔹 Growth and development
🔹 Phases of growth
🔹 Growth curve
🔹 Differentiation
🔹 Dedifferentiation
🔹 Redifferentiation
🔹 Plant growth regulators
🔹 Photoperiodism
🔹 Vernalisation
Important scientists:
🌱 Charles Darwin – Studies on phototropism
🌱 F.W. Went – Discovery of auxin
🌱 Skoog & Miller – Cytokinin studies
🌱 Kurosawa – Gibberellin studies
Important examples:
✔ Auxin
✔ Gibberellin
✔ Cytokinin
✔ Ethylene
✔ Abscisic acid
✔ Coleoptile
This chapter is important for NEET because questions are repeatedly asked from plant hormones and NCERT examples.
🔥 NEET 2027 Importance of This Chapter
Plant Growth and Development is a scoring chapter in NEET Botany.
Previous Year NEET Question Trend:
NEET 2022 – 3 Questions
NEET 2023 – 3 Questions
NEET 2024 – 4 Questions
NEET 2025 – 3 Questions
NEET 2026 – 3 Questions
Students should focus on plant hormones, discoveries and physiological effects.
⭐ Important NEET 2027 Topics From This Chapter
⭐ Growth Curve
⭐ Arithmetic Growth
⭐ Geometric Growth
⭐ Differentiation
⭐ Dedifferentiation
⭐ Auxin Functions
⭐ Gibberellins
⭐ Cytokinins
⭐ Ethylene
⭐ Abscisic Acid (ABA)
⭐ Photoperiodism
⭐ Vernalisation
📥 Download Study Material PDF
📘 Class 11 Biology Chapter 13 Plant Growth and Development Notes – English Medium PDF
👇 Download Here
📗 வகுப்பு 11 உயிரியல் பாடம் 13 தாவர வளர்ச்சி மற்றும் மேம்பாடு குறிப்புகள் – Tamil Medium PDF
👇 Download Here
📝 NEET Previous Year Solved Questions (with Exam Name & Year)
Question 1 (NEET 2026)
The hormone responsible for cell elongation is:
(A) ABA
(B) Ethylene
(C) Auxin
(D) Cytokinin
Question 2 (NEET 2025)
Bolting in plants is caused by:
(A) Gibberellin
(B) Auxin
(C) Ethylene
(D) ABA
Question 3 (NEET 2025)
Stress hormone of plants is:
(A) Auxin
(B) ABA
(C) Cytokinin
(D) Gibberellin
Question 4 (NEET 2024)
Fruit ripening hormone is:
(A) Auxin
(B) Cytokinin
(C) Ethylene
(D) ABA
Question 5 (NEET 2024)
Auxin was discovered by:
(A) Darwin
(B) F.W. Went
(C) Calvin
(D) Krebs
Question 6 (NEET 2023)
Cytokinins mainly promote:
(A) Cell division
(B) Seed dormancy
(C) Leaf fall
(D) Fruit ripening
Question 7 (NEET 2023)
Cold treatment for flowering is called:
(A) Phototropism
(B) Vernalisation
(C) Transpiration
(D) Respiration
Question 8 (NEET 2022)
Plant hormone present in gaseous form:
(A) Auxin
(B) Ethylene
(C) Gibberellin
(D) Cytokinin
Question 9 (NEET 2022)
Apical dominance is controlled by:
(A) Auxin
(B) ABA
(C) Ethylene
(D) Cytokinin
Question 10 (NEET 2022)
Dormancy of seeds is promoted by:
(A) Auxin
(B) Gibberellin
(C) ABA
(D) Ethylene
✅ Answer Key + Detailed Solutions
1. Answer: C – Auxin
Explanation: Auxin promotes cell elongation and growth in plants.
2. Answer: A – Gibberellin
Explanation: Gibberellins induce rapid stem elongation called bolting.
3. Answer: B – ABA
Explanation: Abscisic acid helps plants tolerate stress conditions.
4. Answer: C – Ethylene
Explanation: Ethylene is a gaseous hormone responsible for fruit ripening.
5. Answer: B – F.W. Went
Explanation: F.W. Went isolated auxin from coleoptile tips.
6. Answer: A – Cell division
Explanation: Cytokinins stimulate cytokinesis and cell division.
7. Answer: B – Vernalisation
Explanation: Low temperature treatment that promotes flowering is called vernalisation.
8. Answer: B – Ethylene
Explanation: Ethylene is the only gaseous plant hormone.
9. Answer: A – Auxin
Explanation: Auxin produced by shoot tip controls apical dominance.
10. Answer: C – ABA
Explanation: ABA promotes seed dormancy and inhibits growth.
📚 More Free Biology Materials Available
📌 Class 11 Biology Notes
📌 Class 12 Biology Notes
📌 NEET Previous Year Question Papers
📌 Chapter Wise Tests
📌 Mock Test Series PDF
📌 Answer Key & Solutions
📌 Online Test Links
📌 Doubt Support Forms
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Motivation
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மற்றைய எல்லாம் பிற
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