A t vascular plant ( A mature l l t (any
plant other than mosses and l t th th d liverworts), contains several types li t) ti lt of differentiated cells. These are of differentiated cells These are grouped together in tissues. Some grouped together in tissues Some tissues contain only one type of tissues contain only one type of cell. Some consist of several. cell Some consist of several
M Meristematic P t ti Protective P Parenchyma h S l Sclerenchyma h Collenchyma Xylem Phloem
Meristematic M i t ti
The main function
of meristematic of meristematic tissue is mitosis. The cells are small, thin walled, with thin‐walled with no central vacuole and no l d specialized features. p f
Meristematic tissue is located in the apical meristems at the growing p points of roots and stems. f the secondary meristems (lateral buds) at the buds) at the nodes of stems (where of stems (where branching occurs), and in some plants, plants meristematic tissue, called the cambium that is found within cambium, that is found within mature stems and roots. The cells produced in the meristems h ll d d h soon become differentiated into one or another of several types h f l
Protective P t ti
Protective tissue covers the surface of f f
leaves and the living cells of roots and stems. Its cells are flattened with their top and bottom surfaces parallel. db f ll l Protective tissues are usually present Protective tissues are usually present in the outermost layer of the plant in the outermost layer of the plant body such as leaves, stem and roots.
Parenchyma P h
The cells of parenchyma are large,
thin‐walled, and usually have a large central vacuole. They are often partially separated from each other and are usually stuffed with d ll t ff d ith plastids. I In areas not exposed to light, t d t light colorless plastids predominate and f food storage is the main function. g f...
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