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Seedless Plants Chapter 9 Section 2
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Nonvascular Plants Very small plants that have rhizoids rather than ROOTS.
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Nonvascular plants Water is absorbed and distributed directly through cell membranes and CELL WALLS. Grow in DAMP environments Reproduce by SPORES rather than seeds
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Examples Mosses – green, leaflike growths arranged around a central stalk Liverworts – flattened, leaflike bodies Hornworts – have only one choloroplast in each of their cells
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Mosses
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Liverworts
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Hornworts
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Nonvascular Plants Frequently pioneer species – organisms that are the first to grow in new or disturbed areas and which change ENVIRONMENT conditions
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Seedless Vascular Plants
Reproduce by spores, but have VASCULAR tissue that carries water and nutrients throughout the plants
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Seedless Vascular Plants
Can grow BIGGER and THICKER than nonvascular plants FERNS – largest group of seedless vascular plants
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Ferns Have stems, leaves, and ROOTS LEAVES are called fronds
Reproduce by SPORES found on the back of their fronds
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Club Mosses Needlike leaves
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Horsetails Jointed stem with a HOLLOW center
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Importance of seedless plants
Fuel – decaying seedless plants are compressed into peat and eventually COAL. Soil conditioners FERNS can be used for weaving material and basketry
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