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3 Cards in this Set
- Front
- Back
Provide example genera of partially/fully aquatic ferns. |
Azolla and marsilea |
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In what era did seedless vascular plants reach their greatest abundance and diversity? |
Greatest abundance between the Devonian period and the carboniferous period in the Paleozoic era. |
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What is a seed? What is an ovule? |
A seed is a mature ovule. An ovule is a megasporangium, a single functional megaspore which becomes a female gametophyte, with protective tissue called integument. |