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The evolution and classification of plants, focusing on their characteristics, the challenges they faced in moving from water to land, and their various reproductive strategies. It covers the differences between non-vascular and vascular plants, the groups of tracheophytes, and the advantages of seed-bearing plants.
Typology: Slides
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PLANT CHARACTERISTICS
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Plants are classified based on
whether or not they have
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Bryophytes Tracheophytes
Plants
Has Vascular
Tissue
Has NO Vascular
Tissue
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Typical Moss Plant (most common bryophyte)
Spores form inside the capsule.
Notice the problem of nutrient separation into air and soil is solved with underground and above ground parts. (Although NO TRUE roots, stems or leaves are present)Docsity.com
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There are 11, species of ferns.
Sori
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a. A fully developed embryo b. Food supply for embryo c. A water-proof seed coat to keep from drying out
Seed-Bearing Tracheophytes
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Gymnosperms- “naked
seed”
Sago Palm Ginkgo Ginkgo Docsity.com
Sequoia
Juniper Pine Docsity.com
Angiosperms- “enclosed seeds”
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1. Winged fruit – glides to new location (maple fruit) 2. Floating fruit – can float to new locations (coconut) 3. Fleshy fruit - sweet bright colored fruit have seeds that survive the digestive system of animals that eat the fruit (apple) 4. Spiny fruit- Velcro like projections attach to the fur of animals (cockleburs)
Maple seeds: Winged fruit
Burdock: Spiny fruit Docsity.com