Which of the following sets of animals belong to class cyclostomasis
A. Herdmania and petromyzon
B. Petromyzon and myxine
C. Amphioxux and balanoglossus
D. Herdmania and myxine

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1 Answers

Correct Answer - B
Tunicates (Herdmania) shows retrogressive metamorphosis which results in the degeneration in adult.

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