Chapter_21

Chapter_21 - Chapter 21 Chapter 21 The Plant Kingdom BIO...

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Chapter 21 BIO 1002 1/29/2008 Chapter 21: The Plant Kingdom I. Characteristics of All Plants a. Eukaryotic b. Multi-cellular c. Photosynthetic (fungi do not go through photosynthesis) d. Cellulose cell walls (fungi instead have chitin) II. Characteristics of More Complex Plants - Plants that made it from water to land a. Roots - Anchor the plants, absorb water b. Xylem and phloem vessels: - Transport food and water c. Lignin: - Added to cell walls, “woody” d. Cuticle: - Waxy layer to prevent water loss e. Stomata: - Gas exchange, closes pores for water control f. Different reproductive methods: - Water no longer needed, use something else III. *Plant Life Cycle - Given the name “Alteration of Generations” - Half the time spent haploid, the other half as diploid - Diploid sporophyte (2 copies of every chromosome of every cell) Meiosis Haploid spore Haploid gametophyte (has only one copy of every cell) Mitosis haploid gamete fertilization Diploid sporophyte 1
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IV. Land Plants
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Chapter_21 - Chapter 21 Chapter 21 The Plant Kingdom BIO...

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