parenchyma collenchyma scalenchymaa differces
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Parenchyma
present in cortex and pith of stem
thin cell wall
persence of intercellular spaces
food storage
provide support to plant
sometimes perform photosynthesis, such type of parenchyma tissue is known as chlorenchyma
collenchyma
found in leaf stalk below the epidermis and leaf midribs
cells are elongated and thickened at corner due to deposition of pectin
very little intercellular spaces
provide mechanical support
it allows easy bending
sclerenchyma
it makes plant hard and stiff
it forms protective covering
tissue are dead
cells are long and narrow
cell wall are thickened due to lining
no intercellular spaces
present in stem
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