Plants - Plants A. Characteristics 1. Domain: Eukarya 2....

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Plants A. Characteristics 1. Domain: Eukarya 2. Kingdom: Plantae 3. Multicellular 4. Eukaryotic 5. Photosynthetic autotrophs a. chlorophylls A and B b. carotenoids c. xanthophylls 6. Starch- method of storing excess food 7. Cell Walls- cellulose 8. Terrestrial (Primarily)- land organisms 9. Lifecycle a. Bryophytes- Sporic meiosis → heteromorphic (change the way they look) → haploid stage dominant b. Traecheophytes- Sporic meiosis → heteromorphic →diploid stage dominant - has vascular tissue (xylem- water, support; phloem- sugars) B. Bryophyta 1. Mosses, liverworts
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2. Thallus- body, Multicellular a. lacks vascular tissue b. small plant because of lack of vascular tissue c. live in moist environments 3. Life cycle a. sporic meiosis, heteromorphic alternation of generations, haploid stage dominant b. Gametophyte stage is major stage, starts with spore - haploid - Spore- protonema (immature gametophyte) green filamentous (1) this shows that Bryophyta have evolved from spirogyra (green filamentous algae) - mature gametophyta- antheridia (male organ- produce and protect sperm), archegonia (female organ- protects eggs, zygote grows inside) (1) motile sperm
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- dioecious- “two houses”, unisexual, a girl plant a separate guy plant, heterospory - Monoecious- bisexual, both spores, homosporous c. Sporophyte is attached to gametophyte and depends on it for nutrients - diploid - minor stage 4. . Movement onto Land
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Plants - Plants A. Characteristics 1. Domain: Eukarya 2....

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