Biology Chapter 12-1

Biology Chapter 12-1 - – produce sperm and eggs...

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Chapter 12 Section 1- What is a Plant? Imagine spending a day without plants.   What would you eat?  It would be impossible to make chocolate chip cookies and many other foods. Without plants, you couldn’t eat much. Almost all food is made from plants or animals that eat plants. Life would be very different without plants! Plant Characteristics all perform photosynthesis all contain cuticles cuticle – waxy layer that coats most of the surfaces of plants that are exposed to air. A cuticle keeps the plant from drying out. all have cell walls Cell wall lies outside the cell membrane and keeps the plants upright. all reproduce Plants have two stages in their life cycle: 1. sporophyte – plants make spores spores grow into gametophyte 2. gametophyte
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Unformatted text preview: – produce sperm and eggs. Fertilized egg grows into a sporophyte. Plant Classification Plants are classified as nonvascular and vascular. Vascular plants are divided into 3 groups: • seedless plants • nonflowering seed plants • flowering seed plants 1 Nonvascular Plants lack specialized conducting tissues to move water and nutrients and water through the plant. They also lack true roots, stems, and leaves. Examples : • liverworts • hornworts • mosses Vascular plants has specialized tissues that conduct materials from one part of the plant to another. Seedless vascular plants include ferns, horsetails, and club mosses Nonflowering seed plants are termed gymnosperms . Examples are pine trees. Flowering seed plants are termed angiosperms . 2...
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Biology Chapter 12-1 - – produce sperm and eggs...

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