Question
What is the difference between parenchyma and collenchyma?

Answer

 
Parenchyma
 
Collenchyma
$1.$
The tissue consists of thin-walled living cells.
$1.$
The tissue consists of cells having localised thickening in their cell walls.
$2.$
It is distributed in almost all the parts of the plant body.
$2.$
It occurs mostly in the aerial parts of the plants and is restricted to the other layers.
$3.$
The living cells of parenchyma assimilate and store food. They also store waste products.
$3.$
Collenchyma is the chief mechanical tissue in parts of a young plant particularly in the young dicotyledonous stems.

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