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Question
Notochord is extended up to head and is retained throughout life in
Notochord is extended up to head and is retained throughout life in
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Solution
The correct option is A Branchiostoma
Branchiostoma is one of the few living genera of lancelets. They do not have a true head, but merely a mouth adjacent to the gill slits with the slightly enlarged anterior end of the dorsal nerve cord above and in front of them. In Brannchiostoma, the notochord is extended up to the head and is retained throughout its life.
So, the correct answer is option A.
Branchiostoma is one of the few living genera of lancelets. They do not have a true head, but merely a mouth adjacent to the gill slits with the slightly enlarged anterior end of the dorsal nerve cord above and in front of them. In Brannchiostoma, the notochord is extended up to the head and is retained throughout its life.
So, the correct answer is option A.
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