[ lī′kə-fīt′ ]
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Any of various seedless vascular plants belonging to the phylum Lycophyta and characterized by microphylls (primitive leaves found in ancient plants). Among lycophytes, the sporophyte is the dominant generation (the large plant). Lycophytes first appeared in the Devonian period, and lycophyte trees were abundant in the ancient forests of the Carboniferous period. Modern lycophytes include such plants as the club mosses and the resurrection plant (Selaginella lepidophylla).
SHALL WE PLAY A "SHALL" VS. "SHOULD" CHALLENGE?
Should you take this quiz on “shall” versus “should”? It should prove to be a quick challenge!
Question 1 of 6
Which form is used to state an obligation or duty someone has?
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.