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Solution


Q.

Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system.                [2018]
1 Amphibia  
2 Reptilia  
3 Aves  
4 Osteichthyes  

Ans.

(3)

The alimentary canal of birds has additional chambers, the crop and gizzard. The crop stores and softens the food, however, the gizzard helps in crushing and churning the food, e.g., Pavo, Psittacula, Corvus.