Part 1| Tissues : All Plant Tissues Class 9th Science | Chapter 6 Tissues class 9 science NCERT
Class 8/9 Science by Armaan・2 minutes read
Plant tissues consist of meristematic tissue for growth and permanent tissue for specific functions, including parenchyma, collenchyma, and sclerenchyma. The epidermis protects against water loss, while cork serves as a protective barrier composed of suberin and fatty acids, forming dead cells with zero intercellular space.
Insights
- Tissues are groups of cells with similar functions, including meristematic tissues that continuously divide and eventually differentiate into permanent tissues. Permanent tissues, such as parenchyma, collenchyma, and sclerenchyma, have distinct structures and functions in plants, contributing to flexibility, support, and storage.
- The epidermis, a protective layer in plants, plays a crucial role in resisting water loss, mechanical injury, and pathogen invasion. Specialized structures like stomata and cuticle regulate gas exchange and water absorption, while cork, formed by secondary meristems, provides impermeability and protection against external factors, emphasizing the intricate defense mechanisms in plant tissues.
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Recent questions
What are the two main types of plant tissues?
Meristematic and permanent tissues.
What are the three types of meristematic tissues in plants?
Apical, intercalary, and lateral meristems.
What are the characteristics of sclerenchyma tissues?
Dead cells, thick lignified walls, mechanical support.
What is the function of the epidermis in plants?
Outer protective layer, water resistance, gas exchange.
What are the functions of xylem and phloem tissues in plants?
Transport water, minerals, food, and hormones.
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