Most primitive member, in which roots are not present, is
A
Psilotum
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B
Rhynia
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C
Lycopodium
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D
Selaginella
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Solution
The correct option is BRhynia Rhynia is a single-species genus of Devonian vascular plants. Rhynia is more primitive than Psilotum and both lack true roots. Hence, answer is Rhynia.