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Plant Growth and Development

Jammu & Kashmir Board · Class 11 · Biology

Complete topic list for Plant Growth and Development in Jammu & Kashmir Board Class 11 Biology. Key concepts, sub-topics, and what to focus on for board exams.

105 questions80 flashcards5 concepts

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4 Topics · Jammu & Kashmir Board Class 11 Biology

Topics in Plant Growth and Development

1

1. Growth and Its Nature

  • Growth is an irreversible permanent increase in size of an organ, its parts, or even a single cell.
  • Growth is accompanied by anabolic and catabolic metabolic processes that use energy.
  • Plants retain the capacity for unlimited growth throughout life because meristems keep adding new cells.
2

2. Phases of Growth and Growth Rates

  • The period of growth is divided into three phases: meristematic, elongation, and maturation.
  • Meristematic cells are rich in protoplasm, have large nuclei, thin primary cellulosic walls, and abundant plasmodesmata.
  • The elongation phase shows increased vacuolation, cell enlargement, and new cell wall deposition.
3

3. Conditions for Growth and Differentiation

  • Water, oxygen, and nutrients are essential for growth.
  • Water is needed for cell enlargement and turgidity, which help extension growth.
  • Oxygen provides metabolic energy needed for growth activities.
4

4. Plasticity and Factors Controlling Development

  • Plasticity is the ability of a plant to follow different developmental pathways in response to environment or life phase.
  • Heterophylly in cotton, coriander, and larkspur is an example of plasticity.
  • In buttercup, leaves formed in air differ from leaves formed in water, showing environmental plasticity.

Key Concepts

Central concept: Plant growth and development as a connected set of processes controlled by meristems, differentiation, and plant growth regulators

GrowthMeristemsPhases of growthGrowth ratesDifferentiationDedifferentiation and redifferentiationDevelopmentPlant growth regulators

Frequently Asked Questions

What are the important topics in Plant Growth and Development for Jammu & Kashmir Board Class 11 Biology?
Plant Growth and Development covers several key topics that are frequently asked in Jammu & Kashmir Board Class 11 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Plant Growth and Development — Jammu & Kashmir Board Class 11 Biology?
Understand the core concepts first, then work through the 105 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Plant Growth and Development

All 19 chapters — Jammu & Kashmir Board Class 11 Biology Syllabus

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