This is the image of a vertebrate Petromyzon. Identify which of the following is the correct feature of the organism.

It has no coelom

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Presence of water vascular system

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Jawless

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Dorso-ventrally flattened body

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Solution

The correct option is C Jawless
Petromyzon belongs to the class Cyclostomata. It is a jawless vertebrate. It has a true coelom. Water vascular system is the feature of Echinodermata. On the other hand, Platyhelminthes have a dorso-ventrally flattened body. Both of them are invertebrates.

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