Match the description given in column I with their examples given in column II and choose the correct option.
Column I Column II
(Description) (Example)
1. Aquatic respiratory A. Skin organ
2. Organ which acts B. Ureter urogenital duct and opens into the cloaca
3. A small median chamber C. Cloaca that is used to pass faecal matter, urine and sperms to the exterior
4. A triangular structure D. Sinus venosus which joins the right atrium and receives blood through vena cava

Column I	Column II
(Description)	(Example)
1. Aquatic respiratory	A. Skin organ
2. Organ which acts	B. Ureter urogenital duct and opens into the cloaca
3. A small median chamber	C. Cloaca that is used to pass faecal matter, urine and sperms to the exterior
4. A triangular structure	D. Sinus venosus which joins the right atrium and receives blood through vena cava

A. 1 - A, 2 - B, 3 - C, 4 - D

B. 1 - C, 2 - A, 3 - D, 4 - B

C. 1 - B, 2 - A, 3 - C, 4 - D

D. 1 - C, 2 - B, 3 - D, 4 - A

Correct Answer : A.

1 - A; 2 - B; 3 - C; 4 - D

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