PLANT TISSUE PART 2
COMPLEX PERMANENT TISSUE These are the tissues made of different types of cells; all the cells combine to perform a common functton. They constitute of vascular bundles, XYLEM XYLEMTUBES Complex permanent tissues are of two types;- COMPLEXPERMANENTTISSUES COMPLEX PERMANENT TISSUES XYLEM PHLOEM
XYLEM These are dead and thick walled cells. Xylem is the water conducting element transportation of water) which also provides mechanical strength to the Lant, They are further divided into four components:- XYLEM XYLEM TRACHEIDS VESSELS XYLEMPARENCHYMA XYLEMFIBRES
TRACHEIDS .It is a tubular structure. The cells are elongated uwith sharp ends PITS Help in the transportation of water and minerals vertically Their main function is conduction of waten. Tracheid
VESSELS It is a bubular structure. The cells are elongated and aligned end to end. Help in the transportation of water and minerals vertically Their main function is conduction of water Vessel
XYLEM PARENCHYMA Help in storage of food. XYLEM FIBRES They are supportive in unction . I t conducts water in sideways . . The cells are both elongated and pointed at the end. NUCLEUS Xvlem parenchyma
PHLOEM Phloem is the food conducting element (transportation of food) The material (food) can move in both the directions (i.e. toward the root and shoot) because phloem transports food from leave to other parts of the plant PHLOEM Phloem is divided into four components:- PHLOEM SIEVE TUBES COMPANIANCELLS PHLOEMFIBRES PHLOEMPARENCHYMA
SIEVE TUBES These are the tubular cells having perforated walls (small pores in the wall). COMPANION CELLS They are Living parenchumatous celLs. The cell wall is thin. The sieve tube and companion cells are originated from the same mother cells,
PHLOEM FIBRES They are the dead cells made of sclerenchymatous tissues Examples: jute, flex, hemp. PHLOEM PARENCHYMA They are the living parenchymatous They help in storage of food. hey have nucleus and cellulosic cell wall They are absent in monocots.
Currently pursuing my engineeering in Biotechnology, in B.M.S college of Engineering. Dancing & Reading keeps me alive.