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10 Cards in this Set
- Front
- Back
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What does it mean that all plants are thought to be monophyletic? |
All plants evolved from a common ancestor |
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What order are plants believed to have evolved in? |
Water plants were the first to evolve and then land plants evolved from them |
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Where are most seedless plants found? |
Moist areas (marshes, swamps) |
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How many species of seedless plants are there? |
40,000 |
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Why is green algae sometimes considered a plant? |
It has chlorophyll in it |
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What difficulties did plants have to overcome to adapt to life on land? |
Lack of water would cause a problem for the cells Desiccation- means to dry out Had to have more structure and grow up Lost protection from the water against UV rays from the sub Had to figure out a new way to spread their gametes |
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What were advantages to growing on land? |
More sunlightMore carbon dioxide |
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What do Haplontic,Diplontic, haplodiplotonic mean? |
Haplontic- lives a haploid life mostly Diplontic- lives a diploid life mostly Haplodiplontic- lives both |
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The gametophyte is what? Where does it come from? What does it produce? |
The haploid version of a plant Comes from spores that did mitosis Makes gametes |
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The sporophyte is what? Where does it come from? What does it produce? |
The diploid version of a plant Comes from a sperm and an egg fusing together Do meiosis and makes spores |
