Q. Refer the following statement and answer the question.
'Name of "X" is derived from stinging capsules. It exhibits metagenesis containing two body forms in which sessile and cylindrical form is called "Y" and umbrella shaped and free swimming is called "Z".
Identify X, Y, and Z

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Solution:

Name of coelenterate is derived from stinging capsules. It exhibits metagenesis containing two body forms in which sessile and cylindrical form is called polyp and umbrella shaped and free - swimming is called medusa.