(C) in buccal cavity
(D) none
49. Sea bird is
(A) Penguin
(B) Ostrich
(C) Rhea
(D) Pavo
50. Diaphragm in birds is
(A) Biconvex
(B) flat
(C) concave
(D) absent
51. Study of birds is
(A) Avionics
(B) Ornithology
(C) Anthropology
(D) Herpetology
52. Water proof nature of aquatic birds is due to
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Answer:
49)A 50)C 51(D
Explanation:
I think it is correct
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