41. Larve of .......... after metamorphosis return to the ocean.
42. Chondrichthyes is characterized by .........
A. ventral mouth
B. placoid scale
C. ctenoid scale and ventral mouth
D. placoid scale and ventral mouth
Answer : Option D
43. Air bladder is absent in _______
44. Sea horse is ________
45. Terminal mouth occur in
46. Which of the following is oviparous fish ?
48. They are cold-blooded animal
49. Amphibia means .........
A. A = amphi = dual , B = bios = life
B. A = amphi = water , B = bios = life
C. A = Amphi = single , B = bios = life
D. A = amphi = land , B = bios = life
Answer : Option A
50. The limbless amphibians is