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BOTLAB - E XERC ISE 5 P LA N T CEL LS Cell-structural and...

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EXERCISE 5: PLANT CELLS Cell - structural and functional unit of all living organism -discovered by Robert HOOKE DNA -storing heredity information 2 Cell Types: 1. Eukaryote 2. Prokaryote PLANT CELL >non-living components: cell wall, vacuole >living components: cytoplasm & its suspended organelles * CELL WALL -lignin -cutin -suberin * middle lamellae -non-living intercellular layer composed of pectin -cements together the neighboring cells of cell wall * plasmodesmata - interconnect cells -fine holes on the wall * primary pit fields -clusters appearing in a particular area of the wall * cell sap/ vacuolar sap -fluid filled in a vacuole -suspended substances: a. anthocyanins – water soluble pigments b. metabolites – sugar, alkaloids, organic acids and inorganic salts c. crystals - waste products ---> Calcium Oxalate : Raphides-needle-like Rosette-star/rose-like Prismatic- diamond/prism-like Styloid- knife-like --->Calcium Carbonate : Cystolith –grape-like * Cytoplasm -viscous colloidal substance * Membrane >double-membraned organelles:
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