Question

Which of the following animals have notochord that extend from its head to tail?
1) Ascidia
2) Salpa
3) Doliolum
4) Amphioxus​

Answer 1

Answer:

4) Amphioxus

Explanation: The chordata cephalochordata  has a notochord that extends from head to tail region and persists through out its life .

eg : Branchiostoma ( amphioxux or lancelet)

Answer 2

4) Amphioxus​ have notochord that extends from their head to tail

Why is it so?

• Amphioxus, likewise called Branchiostoma is an individual from the Cephalochordata.
• They have fragmented prolonged bodies, notochord that broadens the length of the body, reaching out from head to tail, continuing all through the creature's life, dorsal empty nerve rope, pharyngeal cuts, post-anal-centric tail.

Characteristics of Cephalochordata:

• Cephalochordata has a place with the chordate.
• They have divided prolonged bodies, notochord that expands the length of the body, reaching out from head to tail, enduring all through the creature's life, dorsal empty nerve rope, pharyngeal cuts, post-anal-centric tail.

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