Match the following columns and select the correct option.
| Feature | Group |
|---|---|
| (a) 6–15 pairs of gill slits | (i) Trygon |
| (b) Heterocercal caudal fin | (ii) Cyclostomes |
| (c) Air bladder | (iii) Chondrichthyes |
| (d) Poison sting | (iv) Osteichthyes |
From Zoology › Animal Kingdom › Chordates: Pisces to Mammalia — lectures, notes and every past question on it.
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