Question

Mark the incorrectly matched pair

(1)	Petromyzon	-	Body devoid of scales and paired fins
(2)	Scoliodon	-	Operculum present but air bladder is absent
(3)	Scoliodon	-	Heart two chamered with sinus venosus
(4)	Rana	-	Cold blooded with 10 pairs of cranial nerves and mesonephric kidneys

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

Answer: (B)

Correct answer is (b) 2