Plant '10 - Click to edit Master subtitle style Plants...

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Unformatted text preview: Click to edit Master subtitle style Plants Characteristics of plants: 1. Multicellular Eukaryotes 2. Have cell walls made of cellulose 3. Carry out photosynthesis using chlorophyll a & b 4. Most are autotrophs • A few are parasites (live on living organisms) or saprobes Plant Survival 1. Sunlight 2. Water 3. Minerals 4. Gas Exchange 5. Transport of water and nutrients throughout the plant body  Remember Photosynthesis :  6H2O + 6CO2 C6H12O6 + 6O2 → (water + carbon dioxide + sunlight glucose + oxygen) Evolution of Plants  Plants most likely evolved from an organism like the freshwater multicelluar green algae living today.  Plants had to overcome “challenges” as they moved from water to land: Adapt to be able to acquire water Adapt features to transport water Be able to conserve water more effeciently 4 main plant groups:  1. Bryophytes (Mosses and their relatives)  2. Seedless Vascular (Ferns and their relatives)  3. Gymnosperms (cone-bearing plants)  4. Angiosperms (flowering plants) The 3 most important features that are used to classify the plants into these 4 groups are:  Water-conducting tissue (vascular)  Seeds  Flowers Vascular plants...
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Plant '10 - Click to edit Master subtitle style Plants...

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