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Question
Living fossil pteridophyte is
Living fossil pteridophyte is
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Solution
The correct option is B Psilotum
The whisk fern of the Psilotum species is a living fossil from the time before the dinosaurs. It has leafless whisk-like branches upward and is found in the tropical regions around the world. It is descendant from the first vascular land plants, the Rhyniophytes, that appeared on earth around 400 million years ago. Its primitive nature is highlighted by its having flagellated sperm and absence of roots and leaves, unlike the more advanced flowering plants. Its lack of seeds in the reproductive cycle is another factor explaining its ancient evolutionary origin. Thus the correct answer is option B.
The whisk fern of the Psilotum species is a living fossil from the time before the dinosaurs. It has leafless whisk-like branches upward and is found in the tropical regions around the world. It is descendant from the first vascular land plants, the Rhyniophytes, that appeared on earth around 400 million years ago. Its primitive nature is highlighted by its having flagellated sperm and absence of roots and leaves, unlike the more advanced flowering plants. Its lack of seeds in the reproductive cycle is another factor explaining its ancient evolutionary origin. Thus the correct answer is option B.
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