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WELCOME
SREE NARAYANA TRAINING COLLEGE SREEKANDESWARAM POOCHAKKAL P.O
CHERTHALA
PLANT TISSUES
SUBMITTED TO: SOYA. P
SUBMITTED BY : NEETHU PETER
SUBMITTED ON: 2-9-2014
INTRODUCTIONplant tissues are the tissues
formed of mature and non dividing cells which
are derived from the meristematic tissues by
growth and differnentiation .
Their cells have definite shape
size and function . Based on nature plant
tissues are classified into simple and complex
tissue.
simple tissues include
parenchyma , collenchyma , sclerenchyma, .
Complex tissues include xylem , phloem.
SIMPLE TISSUES
PARENCHYMA
it is the simplest and the least specialized tissue.
It forms the fundamental tissue or the ground tissue of the plant body.
It consist of polygonal and thin walled living cells with or without intercellular space.
Storage of reserve food materials such as starch, oils, fats, and proteins.
Helps in respiration and secretion.
It helps in the transport of materials.
PARENCHYMA
COLLENCHYMA It is formed of elongated thick walled and
terminally tapering cells.
Cell walls are non lignified , irregularly
thickened and formed of cellulose , and
pectin.
Protects leaves from tearing.
Serves as the chief supporting tissue .
Some cells possess chloroplasts and
carry out photosynthesis.
COLLENCHYMA
SCLERENCHYMA
It is the non living mechanical tissue found in
the cortex and vascular region of the stem,
leaves, fruit wall etc.
Cells are hard thick walled elastic dead and
devoid of living protoplast at maturity. They
differ in sixe, shape and origin .
Provide strength and support to the plant body.
Protects plant body from damages .
Sclereids of some nuts from a hard protective
shell.
SCLERENCHYMA
XYLEM It is a conducting tissue of vascular
plants responsible for the upward
conduction of water and inorganic
solutes from roots.
Xylem is composed of both living and
dead cells.
Provide mechanical support by virtue of
their hard and firm secondary wall.
PHLOEM
It is the chief food conducting tissue of vascular
plants concerned with the translocation of
synthesized organic food from the centers of
their production to the regions of their
utilization.
It provide mechanical support and elasticity.
Storage of organic nutrients and other
substance in phloem parenchyma.
Translocation of organic nutrients such as
simple sugars complex carbohydrate and amino
acids.
PHLOEM
CONCLUSION
These cells are very important in plant
growth and their sustainability .
It also helps the plants in many ways .
Important function of these tissues are
photosynthesis and support to the
plants.
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