Protochordata marks the evolution of a new type in the body structure. How?

By presence of notochord

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By separating nervous tissue from the gut

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By developing a circulatory system

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None of the above.

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Solution

The correct option is A
By presence of notochord

Protochordates are the first animal to show the presence of notochord at some stage of life. While the notochord does separate the nervous tissue from the gut, the presence of notochord is far more significant in evolutionary studies.

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Protochordata mark the evolution of a new type of body structure. How?

Protochordata marks the evolution of a new type in the body structure. How?

Q. Protochordates mark the evolution of a new type of body structure. How?

Q. The is a long rod-like support structure that separates the nervous tissue from the gut.

Question 18
Which one of the following feature is not a characteristic of protochordata?

(a) Presence of notochord
(b) Bilateral symmetry and coelom
(c) Jointed legs
(d) Presence of circulatory system

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Protochordata marks the evolution of a new type in the body structure. How?

The correct option is A By presence of notochord Protochordates are the first animal to show the presence of notochord at some stage of life. While the notochord does separate the nervous tissue from the gut, the presence of notochord is far more significant in evolutionary studies.

The correct option is A
By presence of notochord

Protochordates are the first animal to show the presence of notochord at some stage of life. While the notochord does separate the nervous tissue from the gut, the presence of notochord is far more significant in evolutionary studies.