1.

Which of the following sets of animals belong to class cyclostomasisA. Herdmania and petromyzonB. Petromyzon and myxineC. Amphioxux and balanoglossusD. Herdmania and myxine

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


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