Section 1
Early Plant Life
Book
Version 32
By Boundless
By Boundless
Boundless Biology
Biology
by Boundless
6 concepts
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Early Plant Life
A diverse array of seedless plants still populate and thrive in the world today, particularly in moist environments.
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Evolution of Land Plants
The geologic periods of the Paleozoic are marked by changes in the plant life that inhabited the earth.
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Plant Adaptations to Life on Land
Plants adapted to the dehydrating land environment through the development of new physical structures and reproductive mechanisms.
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Sporophytes and Gametophytes in Seedless Plants
Sporophytes (2n) undergo meiosis to produce spores that develop into gametophytes (1n) which undergo mitosis.
Structural Adaptations for Land in Seedless Plants
Plants developed a series of organs and structures to facilitate life on dry land independent from a constant source of water.
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The Major Divisions of Land Plants
Land plants, or embryophytes, are classified by the presence or absence of vascular tissue and how they reproduce (with or without seeds).