Question

Difference btw parenchyma and collenchyma tissues

Answer 1

PARENCHYMA TISSUE	COLLENCHYMA TISSUE
The cells of this tissue are isodiametric which can be oval, spherical or polygonal in shape.	The cells are not isodiametric and can be circular, oval or polyhedral.
They have a thin cellulosic cell wall.	They possess uneven thickenings around the cell wall.
Intercellular spaces are present in them.	Intercellular spaces are absent in them.
They are found in the soft part of the plant, pith, cortex, medullary rays.	They are found in dicot stem, petiole, and are absent in monocots and roots.
The cell wall is made up of cellulose.	The cell wall is made up of cellulose and pectin.
It consists of unspecialised cells.	It consists of specialised cells.
The functions are storage of food, photosynthesis, gaseous exchange and are also responsible for floating property of aquatic plants.	The function of collenchyma is to provide mechanical support and tensile strength to the plant. It also resists the bending and breaking off the stems by high wind.

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