Subject: General Science
Book: NCERT Biology Class 12
Study of hormones controlling plant growth.
- **Types of Plant Hormones**:
- Auxins, gibberellins, cytokinins, ethylene, abscisic acid.
- **Effects on Growth and Development**:
- Seed germination, fruit ripening, leaf fall.
- **Applications in Agriculture**:
- Hybridization, tissue culture.
**Possible Exam Questions:**
1. What are plant growth regulators? Name them.
2. Explain the role of auxins in plant growth.
3. How does ethylene influence fruit ripening?
4. Discuss the agricultural applications of gibberellins.
5. What is the role of abscisic acid in plant dormancy?
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