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Seedless Plants. Chapter 9 Section 2. Nonvascular Plants. Very small plants that have rhizoids rather than ROOTS. 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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Seedless plants

Seedless Plants

Chapter 9 Section 2


Nonvascular plants
Nonvascular Plants

  • Very small plants that have rhizoids rather than ROOTS.


Nonvascular plants1
Nonvascular plants

  • Water is absorbed and distributed directly through cell membranes and CELL WALLS.

  • Grow in DAMP environments

  • Reproduce by SPORES rather than seeds


Examples
Examples

  • Mosses – green, leaflike growths arranged around a central stalk

  • Liverworts – flattened, leaflike bodies

  • Hornworts – have only one choloroplast in each of their cells





Nonvascular plants2
Nonvascular Plants

  • Frequently pioneer species – organisms that are the first to grow in new or disturbed areas and which change ENVIRONMENT conditions


Seedless vascular plants
Seedless Vascular Plants

  • Reproduce by spores, but have VASCULAR tissue that carries water and nutrients throughout the plants


Seedless vascular plants1
Seedless Vascular Plants

  • Can grow BIGGER and THICKER than nonvascular plants

  • FERNS – largest group of seedless vascular plants


Ferns
Ferns

  • Have stems, leaves, and ROOTS

  • LEAVES are called fronds

  • Reproduce by SPORES found on the back of their fronds


Club mosses
Club Mosses

  • Needlike leaves


Horsetails
Horsetails

  • Jointed stem with a HOLLOW center


Importance of seedless plants
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