A) Aves
B) Reptilia
C) Amphibia
D) Osteichthyes
Correct Answer: A
Solution :
| [a] The digestive tract of Aves has additional chambers in their digestive system as crop and Gizzard. |
| Crop is concerned with storage of food grains. |
| Gizzard is a masticatory organ in birds used to crush food grain. |
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