Given that early land plants most likely share a common ancestor with green algae, the earliest land plants were most likely a. nonvascular plants that grew leafless, photosynthetic shoots.
What exactly are non-vascular plants?
Plants lacking a circulatory system are categorized as nonvascular plants (xylem and phloem). Nonvascular plants, sometimes known as lower plants, are the earliest kind of terrestrial plants. An estimated 500 million years ago, they changed from algae.
Because they lack flowers, fruits, seeds, leaves, roots, and stems, nonvascular plants can be separated from other types of plants, such as angiosperms (flowering plants), gymnosperms, and ferns. Bryophytes are non-vascular plants that include mosses, hornworts, and liverworts.
The estimated 17,000 species of bryophytes live in practically every type of habitat. Some types of algae, especially green algae, are also regarded as nonvascular plants.
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