Question

compare parenchyma collenchyma and sclerenchyma

Answer 1

parenchyma- it is simple permanent tissue.
it is living tissue.
it forms the packaging tissue.
it has thin cell walls.
cells are usually loosely packed.
it stores food and provides support.
it has chlorophyll for photosynthesis.
it is found in leaves and fruits.
chollenchyma- it can either be living or dead.
it has thick cell walls .
a very little intercellular space is found.
it provides the plants with flexibility to bend. it provides mechanical support. it is found in leaf stalks.
schelerenchyma- it is dead tissue. it provides structure and support to the plants.
it usually forms the outer layer.
it has thick cell walls due to lignin deposition.
it is present in stems and vascular bundles.

Answer 2

parenchyma= 1.these are living cell
2.large intercellular space
3.occur in root,stem,leaves,flowers,fruit etc.
4.the group of issodiametic,oval or circular cell

Function: storage
support
gaseous exchange
transport
waste product
Collenchyma= simple permanent tissue of living cell which provides flexibility to soft aerial parts of the plant.

helps to bend without breaking

intercellular space are little

occur below the epidermis in leaf stalks

Function= strength ,growth,storage

Sclerenchyma=simple permanent tissue of dead cells

occur in hypodermis around vascular bundles ,hard covering of seed and nuts,husk of coconut tree.

Function= Mechanical strength, protection,commercial fibre..