Match the following columns and select the correct option.
| Column - I | Column - II |
| :--- | :--- |
| (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 |
- A(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)
- B(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
- C(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
- D(a)-(i), (b)-(iv), (c)-(iii), (d)-(ii)
Solution & Step-by-step Explanation
6-15 pairs of gill slits: Characteristic of Cyclostomes.
Heterocercal caudal fin: Found in Chondrichthyes (cartilaginous fishes).
Air Bladder: Present in Osteichthyes (bony fishes) for buoyancy.
Poison sting: Found in Trygon (Stingray).
Heterocercal caudal fin: Found in Chondrichthyes (cartilaginous fishes).
Air Bladder: Present in Osteichthyes (bony fishes) for buoyancy.
Poison sting: Found in Trygon (Stingray).