Tissues — Chapter Summary
Karnataka Board · Class 9 · Science
Summary of Tissues for Karnataka Board Class 9 Science. Key concepts: A tissue is a group, Plants have supportive tissues and These are actively dividing.
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Overview
Tissues are groups of cells that work together to perform specific functions in living organisms. While single-celled organisms like Amoeba perform all life functions with one cell, multicellular organisms have specialized cells organized into tissues for efficient functioning. This chapter explores
Key Concepts
A tissue is a group
A tissue is a group of similar cells that work together to perform a specific function. In multicellular organisms, different groups of cells speciali
Plants have supportive tissues with many
Plants have supportive tissues with many dead cells because they are stationary and need structural support. Animals have more living tissues because
These are actively dividing plant tissues
These are actively dividing plant tissues found at growing points (apical meristem at tips, lateral meristem for girth increase, intercalary meristem
Include Parenchyma (storage
Include Parenchyma (storage, has intercellular spaces, living cells), Collenchyma (flexibility and support, living cells with thickened corners), and
Xylem (transport of water and minerals
Xylem (transport of water and minerals, contains tracheids, vessels, xylem parenchyma, and fibers) and Phloem (transport of food, contains sieve tubes
Learning Objectives
- Define tissue and understand the concept of division of labour in multicellular organisms
- Compare and contrast plant and animal tissue organization
- Classify and describe different types of plant tissues (meristematic and permanent)
- Identify and explain the functions of various animal tissues
- Understand the relationship between tissue structure and function
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Sources & Official References
- Karnataka SSLC — kseeb.kar.nic.in
- Dept of Pre-University Education, Karnataka
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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