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PLANTS By Erin Martin, Celine Li and Adrienne Favorito.

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Presentation on theme: "PLANTS By Erin Martin, Celine Li and Adrienne Favorito."— Presentation transcript:

1 PLANTS By Erin Martin, Celine Li and Adrienne Favorito

2 Alternation of Generations

3 multicellular diploid (sporophyte) multicellular haploid (gametophyte)

4 Bryophytes Dominant gametophyte generation

5 Double fertilization One sperm fertilizes the egg  zygote One sperm fertilizes 2 polar nuclei  endosperm which provides the zygote with nutrients

6 Types of cells Parenchyma- play a role in storage, secretion and photosynthesis in cells Sclerenchyma- protect seeds and support the plants Collenchyma- provide flexible and mechanical support; found in stems and leaves

7 Growth Primary- length of the plant, (apical meristem) Secondary- width of the plant (lateral meristem) - Vascular Cambium: gives rise to secondary xylem and phloem

8 Parts of the seed Endosperm/ cotyledon- nutrients for seed before it can undergo photosynthesis Plumule  leaves hypocotyl  stem Radicle  root Seedcoat protects embryo from environment

9 Leaf Structure and Function Waxy cuticle Guard cells/ stoma - gas exchange -CAM Cork Cambium Palisade mesophyll Spongy mesophyll


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