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11 Cards in this Set
- Front
- Back
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Explain why most non-seed vascular plants live in moist habitats.
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Sperm cells swim through a continuous film of water to fertilize egg cells.
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Identify and analyze the characteristics of lycophyte and pterophyte sporophytes.
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Lycophytes are small, grow close to the ground, and have stems covered by small, narrow leaves. Roots are present also. Pterophytes have roots under ground, stems, and leaves called fronds usually with sori on their undersides. Spores are found within sori.
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Compare and contrast non-seed vascular plants that exist today and those that live in ancient forest communities.
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Ancient species were much larger and more abundant.
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What are the similarities and differences between the sporophyte of a non-seed vascular plant and the sporophyte of a non-vascular plant?
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The sporophyte of a vascular plant is larger and not dependent on the gametophyte generation; both sporophytes are diploid.
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List the three structures common to all fern sporophytes and describe the function of each.
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fronds- photosynthesis and reproduction; rhizome- support and storage; roots- anchorage and absorption.
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Hypothesize why there are fewer non-seed vascular plants today than there were three hundred million years ago. Analyze, critique and reveiw your hypothesis based on scientific information.
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Earth’s climate has changed decreasing the number of areas in which non-seed vascular plants can survive.
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How do you think the presence of silica in the stems of arthrophytes might protect these plants from being eaten by animals?
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Stems would be hard to digest and silica might cut delicate digestive tissues.
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compact cluster of spore-bearing leaves produced by some non-seed vascular plants.
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Strobilus
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clusters of sporangia usually found on the surface of fern fronds.
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Sorus
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thick, underground stem of a fern and other vascular plants; often functions as an organ for food storage.
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Rhizome
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fern gametophyte.
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Prothallus
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