2. Differentiate between cells of:
(a) Parenchyma and collenchyma
(b) Meristematic tissue and permanent tissue
(c) Sclerenchyma and parenchyma
(0) Cails of involuntary and voluntary muscle
e Fibres of voluntary muscle and cardiac muscle
Answers
Answer:
Meristematic Tissues Permanent Tissue
Capacity to divide
Can divide Cannot divide
Cell Composition
Undifferentiated cells Differentiated cells
Simple/Complex tissues
Always simple tissues, composing of one type of cell only Can be simple or complex tissue. If complex, contains more than one type of cells
Nature of cells
Always Living cells Can be non-living(Sclerenchyma) or living(Parenchyma)
Cytoplasm in cells
Contains dense cytoplasm May or may not contain cytoplasm
Prominent nucleus
Always Prominent in some cells (Parenchyma) while absent in others(Sclerenchyma)
Pace of cell division
Rapid Completely differentiated, do not divide
Size and shape of cells
Size – small
Shape – isodiametric
Lumen – large
Size – large
Shape – varies
Lumen – very narrow or wide
Cell arrangement
Compactly arranged.
No intercellular spaces
Loose in some(Parenchyma)
Compact in some(Sclerenchyma)
Vacuoles
Usually absent Vacuoles present in living cells. But dead cells lack protoplasm
Metabolic rate
Very high Very less or no metabolism at all
Explanation:
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