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Phloem : Phloem A complex tissue which conducts metabolites (food) from the leaves to stems, flowers, roots and storage organs.
comprised of sieve tubes, sieve tube members, companion cells, fibers and parenchyma.
Phloem members : Phloem members Sieve element members
Long slender cells with porous ends
Called sieve tubes
Found only in angiosperms.
Gymnosperms have sieve cells which are similar but lack the sieve plate.
Companion cells
Closely associated with sieve tube members and aid in metabolite conduction.
Phloem : Phloem Phloem fibers - thick walled cells that provide stem support.
Parenchyma cells in the phloem serve as storage sites.
Phloem elements : Phloem elements
SECRETORY TISSUE (Special Tissue) : SECRETORY TISSUE (Special Tissue) These cells are DIVERSE in ORIGIN
Concerned with SECRETION of essential oils , nectar , gum , resins , mucilage and Latex .
Special tissues are of many kinds
* Digestive glands
* Nectaries
* Resin glands and Oil glands
* Laticiferous tissue
* Hydathodes
* Osmophors
Specialized Tissue : Specialized Tissue
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Slide 9 : That was a non profitable assignment (lecture) and the copy right of all the figures and pictures belongs to the beholder on the internet For e-learning
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Slide 10 : A Centre of Biological Studies Dr S. Biswas
Dr A. Biswas
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