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Revision Notes

Tissues in Action — Revision Notes

CBSE · Class 9 · Science

Tissues in Action revision notes for CBSE Class 9 Science: 4 topics in quick points. Part of the CBSE Class 9 Science syllabus.

89 questions96 flashcards5 concepts

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An infographic summarizing the key postulates of Dalton's Atomic Theory, which laid the foundation for modern chemistry.
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Key Topics to Revise

1

1. Basic idea of tissues and organisation

  • A tissue is a group of similar cells working together for a specific function.
  • In multicellular organisms, division of labour increases efficiency.
  • Cells form tissues, tissues form organs, organs form organ systems, and organ systems form the organism.
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2. Meristematic tissue and plant growth

  • Meristematic tissue has actively dividing cells.
  • It is responsible for plant growth in length, girth, and regrowth after cutting.
  • Apical meristem is at root and shoot tips and increases length.
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3. Permanent tissues in plants

  • Permanent tissues are formed from meristematic tissue after differentiation.
  • Permanent tissues may be simple or complex.
  • Simple permanent tissues contain one type of cell.
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4. Conducting tissues and tissue systems in plants

  • Xylem and phloem are complex permanent tissues.
  • Xylem transports water and minerals from roots to other parts of the plant and also provides strength.
  • Xylem consists of tracheids, vessels, xylem parenchyma, and xylem fibres.

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Full Notes

Key Concepts

A tissue is a groupMeristematic tissue contains actively dividing cellsApical meristem is found atLateral meristem forms a ring alongIntercalary meristem is located at

Frequently Asked Questions

What are the important topics in Tissues in Action for CBSE Class 9 Science?
Key topics in Tissues in Action include Basic idea of tissues and organisation, Meristematic tissue and plant growth, Permanent tissues in plants, Conducting tissues and tissue systems in plants. Study these first, then practise questions on each for Class 9 exams.
How should I revise Tissues in Action for Class 9 exams?
Learn the core ideas first, then work through the 89 practice questions on Tissues in Action. Revise 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.

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All CBSE Class 9 Science Revision Notes

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