Tissues in Action
CBSE · Class 9 · Science
Summary of Tissues in Action for CBSE Class 9 Science. Key concepts, important points, and chapter overview.
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Tissues are groups of similar cells that work together to perform a specific function. In multicellular organisms, tissues create division of labour, which makes the body more efficient. Plant tissues and animal tissues differ because plants need support, growth in specific regions, and transport of
Key Concepts
A tissue is a group
A tissue is a group of cells similar in structure that work together to perform a specific function. Tissues are the basic unit of organisation above
Meristematic tissue contains actively dividing cells
Meristematic tissue contains actively dividing cells. These cells are small, thin-walled, tightly packed, have a large nucleus, dense cytoplasm, and g
Apical meristem is found at
Apical meristem is found at the tips of roots and shoots and increases the length of the plant.
Lateral meristem forms a ring along
Lateral meristem forms a ring along the stem and increases the girth or thickness of the plant.
Intercalary meristem is located at
Intercalary meristem is located at the base of the internode or just above the node. It helps in regrowth after cutting, especially in grasses.
Learning Objectives
- Define tissue and explain division of labour in multicellular organisms
- Distinguish between plant tissues and animal tissues
- Describe the three types of meristematic tissue and their functions
- Explain differentiation and the formation of permanent tissues
- Classify simple and complex permanent tissues in plants
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Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- 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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