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Q. Match the following columns and select the correct option.
Column I Column II
a 6-15pairs of gill slits i Trygon
b Heterocercal caudal fin ii Cyclostomes
c Air Bladder iii Chondrichthyes
d Poison sting iv Osteichthyes

NEETNEET 2020Animal Kingdom

Solution:

• 6-15 pairs of gill slits — Cyclostomes
• Heterocercal caudal fin — Chondrichthyes
• Air bladder — Osteichthyes
• Poison sting — Trygon