___________ are common ancestors of pteridophytes like ferns and gymnosperms.
A
Sequoia
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B
Trimerophytes
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C
Marsilea
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D
Pinus
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Solution
The correct option is B Trimerophytes The fossil remains of Trimerophytes gave characteristics similar to the gymnosperms and pteridophytes. So they are considered to be the ancestors of gymnosperms and pteridophytes specially the ferns.