Animal Kingdom Question 48
48. Match the following columns and select the correct option.
| Column-I | Column-II | ||
|---|---|---|---|
| (a) | 6-15 pairs of | (i) | Trygon gill slits |
| (b) | Heterocercal caudal fin |
(ii) | Cyclostomes |
| (c) | Air Bladder | (iii) | Chondrichthyes |
| (d) | Poison sting | (iv) | Osteichthyes |
| (A) | (B) | (C) | (D) | |
|---|---|---|---|---|
| (a) | (iii) | (iv) | (i) | (ii) |
| (b) | (iv) | (ii) | (iii) | (i) |
| (c) | (i) | (iv) | (iii) | (ii) |
| (d) | (ii) | (iii) | (iv) | (i) |
Show Answer
Answer : d
Hints & Solutions
(d) Cyclostomes have an elongated body bearing 6-15 pairs of gill slits for respiration. The caudal fin is the tail fin located at the end of the caudal peduncle and is used for propulsion. See body-caudal fin locomotion. Heterocercal means the vertebrae extend into the upper lobe of the tail, making it longer (as in sharks). It is the opposite of hypocercal. Air bladder and poison string (for. e.g, Trygon) are found in Chondrichthyes as they have to swim constantly to avoid sinking.
