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TISSUES
In unicellular organisms all the life processes such as digestion, respiration, excretion, reproduction etc are performed by
the single cell.
But in multicellualr organisms different groups of cells perform different functions. Thus there is division of
labour in the cell and each tissue is composed of cells that originate from common parent cells and have a characteristic
shape, size and arrangement.
TISSUE: A group of cells that are similar in structure and work together to achieve a particular function forms a tissue.
Importance of tissue:
1. Formation of tissues has brought about division of labour in multicellular organisms.
2. Tissues become organized to form organs and organs into organ system.
3. Workload of individual cell has been decreased.
4. Due to improved organization and higher efficiency, multicellular organisms have higher survival.
TYPES OF TISSUES:
Tissue
Plant Tissue Animal Tissue
Plant Tissue
Meristematic Tissue Permanent Tissue
Apical Latera Intercalary Simple Complex/Compound
l (Protective & Supporting) (Conducting Tissue)
Parenchym Collenchyma Sclerenchyma Phloem Xylem
a
TISSUES
In unicellular organisms all the life processes such as digestion, respiration, excretion, reproduction etc are performed by
the single cell.
But in multicellualr organisms different groups of cells perform different functions. Thus there is division of
labour in the cell and each tissue is composed of cells that originate from common parent cells and have a characteristic
shape, size and arrangement.
TISSUE: A group of cells that are similar in structure and work together to achieve a particular function forms a tissue.
Importance of tissue:
1. Formation of tissues has brought about division of labour in multicellular organisms.
2. Tissues become organized to form organs and organs into organ system.
3. Workload of individual cell has been decreased.
4. Due to improved organization and higher efficiency, multicellular organisms have higher survival.
TYPES OF TISSUES:
Tissue
Plant Tissue Animal Tissue
Plant Tissue
Meristematic Tissue Permanent Tissue
Apical Latera Intercalary Simple Complex/Compound
l (Protective & Supporting) (Conducting Tissue)
Parenchym Collenchyma Sclerenchyma Phloem Xylem
a
