Match the description given in column I with their examples given in column II and choose the correct option.
| Column I — Description | Column II — Example |
| A. Aquatic respiratory organ | I. Skin |
| B. Organ which acts as urogenital duct and opens into the cloaca | II. Ureter |
| C. A small median chamber that is used to pass faecal matter, urine and sperms to the exterior | III. Cloaca |
| D. A triangular structure which joins the right atrium and receives blood through vena cava | IV. Sinus venosus |
- AA – I; B – II; C – III; D – IV
- BA – II; B – IV; C – I; D – III
- CA – II; B – I; C – III; D – IV
- DA – IV; B – II; C – I; D – III
✓ Correct answer: A
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