Even though they are vascular plants, and thus moderately advanced terrestrially, the ferns have not solved all of the problems of terrestrial life. How is this so?

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    They lack advanced vascular tissue.
    Their zygotes remain unprotected from desiccation.
    They do not possess a gametophyte stage.
    They are broad leafed.
    Typically, they lack erect stems.

asked May 30, 2013 in Biology by anonymous
    

1 Answer

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Their zygotes remain unprotected from desiccation.
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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