Uncompressed rocklike fossils in which the original cell structure has been preserved are
A) molds.
B) petrifactions.
C) casts.
D) unaltered fossils.
E) imprints.
Correct Answer:
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Q36: Archegonia and antheridia are structures where _
Q37: The substance in horsetail stems that makes
Q38: Cannel coal is fossilized
A) fern spores.
B) fern
Q39: The fossilized dungs of prehistoric animals and
Q40: The fern gametophyte is typically _.
A) large
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Q43: Embryos are not produced by ferns, only
Q44: Equisetum belongs to a group of plants
Q45: Both antheridia and archegonia are found on
Q46: The annulus of a fern sporangium functions
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