plants. plant cells cell walls provide protection and structure conduct photosynthesis – use...
TRANSCRIPT
![Page 1: Plants. Plant Cells Cell walls provide protection and structure Conduct photosynthesis – Use chlorophyll in organelle chloroplast to do it](https://reader036.vdocuments.mx/reader036/viewer/2022062518/56649e9f5503460f94ba1ede/html5/thumbnails/1.jpg)
Plants
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Plant Cells
• Cell walls provide protection and structure• Conduct photosynthesis– Use chlorophyll in organelle chloroplast to do it
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Structures
• Cuticle waxy, protective layer secreted onto surface of plant which holds water
• Cellulose chemical compound that provides structure and support
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Classificiation
• Vascular plants use tubelike structures that carry water and nutrients throughout plant
• Nonvascular plants lack tubelike structures so must use other ways to transport water and nutrients
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Nonvascular Plants
• Very small plants that have rhizoids rather than roots
• Reproduce by spores not seeds• Examples– Mosses green, leaflike growths around stalk– Liverworts flattened, leaflike bodies– Hornworts one chloroplast in each cell
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Moss
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Liverwort
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Hornwort
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Plant Life Cycle
• Two stages– Gametophyte stage begins when sex cells
produce haploid cells called spores– Sporophyte stage begins with fertilization