chapa1.3
DESCRIPTION
Science Chapter A1 lesson 3 on plant classificationTRANSCRIPT
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Plant Classification
Plants with Tubes
(Vascular Plants)
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Kingdom: Plants
• all plants have many cells/cells have nuclei
• do not need to eat other living things to survive– make their own food
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• Vascular plants: have tubes– tubes found in roots, stems, and leaves– water and nutrients enter plant through
roots• tubes carry water and nutrients through plant to
leaves
– food is made in leaves • different set of tubes carries food to parts of
plant
– Ferns are a type of vascular plant
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• Trees are a type of vascular plant– trunk: largest woody steam– center of trunk: heartwood - made of hard,
dead calls– around heartwood: rings of sapwood
• living tubes that carry water and food are found in sapwood
– outside layer: bark - dead cells that protect the living sapwood
• any plant that has flowers or cones is a vascular plant
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Plants without TubesNonvascular plants
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• nonvascular plants: do not have tubes– moss is a nonvascular plant
• water must soak into plants– passes from cell to cell– food travels with water
• because of this nonvascular plants must live in damp places (lots of water to soak)
• do not grow tall or large
• need fertile, moist soil
• have no roots, stems, or leaves
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Summary
• Plants classified in 2 groups– Vascular plants: have tubes
• Carry water and nutrients in tubes• Grow tall
– Nonvascular plants: no tubes• Take in water from environment• Need to live in moist place• Do not grow tall or large