parts of a seed plant ïµ leaf ïµ stems ïµ roots ïµ seeds

Download PARTS OF A SEED PLANT ïµ Leaf ïµ Stems ïµ Roots ïµ Seeds

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Post on 19-Dec-2015




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  • PARTS OF A SEED PLANT Leaf Stems Roots Seeds
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  • Structure of a Leaf
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  • Leaves CCaptures the suns energy tthe food factory of the plant pproduce the food used by the plant or stored for later use
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  • Part of the Leaf (pg. 2) Cuticle; waxy waterproof coating; helps plant retain water Surface cells: protective layer UUpper Leaf Cells; Tightly packed cells. High concentration of chloroplast LLower Leaf Cells; Widely spaced to allow carbon dioxide (CO 2 ) to reach cells for photosynthesis and oxygen (O 2 ) to escape. VVein: vascular tissue containing the Xylem & Phloem XXylem: carries water from roots to leaves PPhloem: transport food made during photosynthesis.
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  • Chloroplasts OOrganelles which contain chlorophyll llocated inside the food making cells
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  • Stomates aallow the plant to breathe and transpire ggive off moisture
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  • Guard Cells oopen and close the small pore on the underside of the leaf
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  • food mmanufactured in the leaves moves downward through the stem to the roots uused by the plant sstored in stem or root and leaf in the form of sugar, starch or protein.
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  • Respiration pplants respire 24 hours a day cconsume O2 and give off CO2 pplants produce more O2 through ps. Than they consume during respiration and growth.
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  • Photosynthesis & Respiration
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  • Stems ttwo main functions 1. movement of water & minerals from the roots & movement of manufactured food down for storage. 2. support of leaves and reproductive structures
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  • Stems also uused for food storage and reproduction of plants involving cuttings GGreen stems manufacture food just as leaves do
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  • Internal Stem Structure CCambium- separates Phloem and Xylem and produces all new cells.
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  • Two types Herbaceous Woody
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  • Herbaceous Stem No wood and are often soft Woody Stem Durable; made up of many layers
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  • Roots UUsually underground ffunctions: aanchor plant and hold upright aabsorb water and minerals from soil and conduct to stem SSometimes store food TTwo Types FFibrouslike rye grass TTaprootlike carrots!
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  • Root Structure iinternal ssimilar to stems oolder roots have xylem, phloem and cambium
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  • external rroot cap pproduces continuous supply of new cells pprotects roots as they push through soil
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  • Structure rroot hairs aabsorb moisture and minerals ssmall roots
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  • Seeds All seeds share important similarities Inside the seed is a plant ready to grow
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  • Seed Structure Three main parts 1. Embryo: The young plant that develops from the zygote or fertizilzed egg Already contains the beginnings of roots, stems and leaves Uses the food stored in the seed to grow Some seeds are surrounded by a structure called fruit! Yum!!!!!
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  • SEED STRUCTURE 2. Cotyledons: Seed Leaf The stored food sometimes in the seed 3. Seed Coat: Outer covering of the seed. Acts as the skin protecting the embryo and its food from drying out. Allows seed to remain inactive for a long time
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  • Seed Structures
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  • Seed Dissection of the Lima Bean Seed Dissection Page 11 of Packet Looking inside a seed Each team of two will get 2 SEEDS Dry seed vs Soaked seed Draw and observe the dry seed In the mouth or cup of warm water
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  • Seed Dispersal (pg. 139) Dispersed by organisms; an animal eats a fruit and their droppings spread the seeds Seeds enclosed on barblike structures that hook on fur Dispersed by water Dispersed by wind


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