Agnathans (Cyclostomes)
Modified and degenerate offshoot of primitive vertebrate stalk, that arose in Devonian.In the adult stage, they are parasites or scavengers on fish. Secrete anti-coagulants in saliva to facilitate feeding on…
Zoology for UPSC and State PSC exams
Modified and degenerate offshoot of primitive vertebrate stalk, that arose in Devonian.In the adult stage, they are parasites or scavengers on fish. Secrete anti-coagulants in saliva to facilitate feeding on…