Plant Tissue

Plant tissue
	Shoot Stucture
		inclued stem and leaves
		produce food by photosynthesis


	Root Stucture
		anchors plant
		aborbs water and dissolved minerals
		store food during winter for spring regrowth
		root cap- covers tip (very pevelant in soil)
		root tip- place of most growth mitosis
	Meristems reponsible for all plant growth 
		apical (responsible for) root tips
			legnthen stems and roots
			primary growth
		lateral 
		endodermis- regulates whats in the veins
		Pericycle
		xylem
			water / mineral viens
			conducting cells are dead and hollow
			softwood
				tracheids Spindle shaped

				ajacent cells overlap
				tapered shaped
				alower water to move between cells
			hardwood
				vessel shaped
				ends matchup in tube like fashion
		vasular cambium- separates xylem and phloem
		phloem
			
		cork cambium- separates phloem and cortex
		cortex
		epidermis
		Simple tissue- 1 kind of cell
			parenchyma
				soft primary growth
				pliable 
				many sided cells
				thin walled
				remain and divide into maturity
				messophyll of leaves
				volume of leaves
			collenchyma
				support 
				stems streght
				pilabel
				thick walls contain pectin
				alive during maturity
			schenchyma
				supports mature plant
				protects seeds
				thick lignified cell walls - conatin lignin
				long tappered cells
				sclereids stubbier cells
				dead at maturity
Leave Tissues
	high area to volume ratio
	diffusion of CO2
	Arranged to capture sunlight
	Dont shade one another
	
	Cuticle
	Upper epidermis
	Palisade mesophyll 
		one or two layers
		photosynthesis
	Songey Messophyll
	Lower epidermis
		gaurd cells
		stoma


 

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