Can anyone tell me the main topics of chapter tissues of class 9
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Which board ICSE or CBSE?????
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Key notes for Chapter - Tissues, are:
Tissue
A group of cells that are specialized to perform a particular function forms a tissue.
Tissues are mainly classified into two types:
1. Plant Tissues 2. Animal Tissues
1. Plant tissues
Plants do not move, i.e., they are stationary.
Most of the tissues they have are supportive, which provides them with structural strength.
Most of these tissues are dead, as they can provide better mechanical strength than the live ones, and need less maintenance.
Some of the plant tissues keep on dividing throughout the plant life. These tissues are localised in certain regions.
CBSE Class 9 Science Syllabus 2020-2021
Types of Plant Tissues:
Based on the dividing capacity of the tissues, various plant tissues can be classified as growing or meristematic tissue and permanent tissue which have further sub-divisions as explained below:
A. Meristematic Tissue
Meristematic tissues are responsible for growth in plants. Cells in these tissues can divide and form new cells.
Meristematic tissues are of three types:
(i) Apical Meristem: It is present at the growing tip of the stem and roots and increases the length. .
(ii) Lateral Meristem (cambium): It is present beneath the bark. It is responsible for growth in girth of trunk.
(iii) Intercalary Meristem: It is present at internodes or base of the leaves and increases the length between the nodes.
Tissue
A group of cells that are specialized to perform a particular function forms a tissue.
Tissues are mainly classified into two types:
1. Plant Tissues 2. Animal Tissues
1. Plant tissues
Plants do not move, i.e., they are stationary.
Most of the tissues they have are supportive, which provides them with structural strength.
Most of these tissues are dead, as they can provide better mechanical strength than the live ones, and need less maintenance.
Some of the plant tissues keep on dividing throughout the plant life. These tissues are localised in certain regions.
CBSE Class 9 Science Syllabus 2020-2021
Types of Plant Tissues:
Based on the dividing capacity of the tissues, various plant tissues can be classified as growing or meristematic tissue and permanent tissue which have further sub-divisions as explained below:
A. Meristematic Tissue
Meristematic tissues are responsible for growth in plants. Cells in these tissues can divide and form new cells.
Meristematic tissues are of three types:
(i) Apical Meristem: It is present at the growing tip of the stem and roots and increases the length. .
(ii) Lateral Meristem (cambium): It is present beneath the bark. It is responsible for growth in girth of trunk.
(iii) Intercalary Meristem: It is present at internodes or base of the leaves and increases the length between the nodes.
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