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Which of these characteristics is shared by algae and seed plants? |
chloroplasts |
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Angiosperms are most closely related to _____. |
gymnosperms |
|
Which of these was the dominant plant group at the time that dinosaurs were the dominant animals? |
Gymnosperms |
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Plants evolved from green algae approximately _____ million years ago. |
475 |
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_____ are an example of seedless vascular plants. |
Ferns |
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The living plants that are most similar to the first plants to bear gametangia are the _____. |
Bryophytes |
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The closest algal relatives of land plants are _____. |
charophytes |
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Which of the following traits was most important in enabling the first plants to move onto land? |
the development of sporopollenin to prevent desiccation of zygotes |
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In moss, _____ produce sperm |
antheridia |
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The sperm produced by mosses require _____ to reach an archegonium. |
moisture |
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In mosses gametes are produced by _____; in ferns gametes are produced by _____. |
mitosis….. mitosis |
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In seedless plants, a fertilized egg will develop into _____. |
a sporophyte |
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The diploid generation of the plant life cycle always _____. |
produces spores |
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Most bryophytes, such as mosses, differ from all other plants in that they _____. |
lack true leaves and roots |
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In contrast to bryophytes, in vascular plants the dominant stage of the life cycle is the _____. |
Sporophyte |
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What evolutionary development allowed plants to grow tall? |
lignified vascular tissue |
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During the Carboniferous period, forests consisting mainly of _____ produced vast quantities of organic matter, which was buried and later became coal. |
ferns and other seedless plants |
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