Question
Write the characteristics with reference to their classification:
Petromyzon:
Petromyzon:
✓
Answer
(i) Petromyzon belongs to class cyclostomata.
(ii) The skin is soft without scales.
(iii) Endoskeleton is cartilagenous.
(iv) It is an ectoparasite.
(v) It has jawless mouth with suckers.
(vi) Paired appendages are absent.
(ii) The skin is soft without scales.
(iii) Endoskeleton is cartilagenous.
(iv) It is an ectoparasite.
(v) It has jawless mouth with suckers.
(vi) Paired appendages are absent.
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