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