In which of the following animals, the digestive tract has additional chambers like crop and gizzard?

Concept:

• Class Aves (Phylum: Chordata; Subphylum: Vertebrata; Super Class: Ganthostomata) of Animal Kingdom includes birds.
• Most of them can fly except ostrich and have feathers.

Explanation:

• Forelimbs: Wings; hindlimbs have scales and are used for walking, grasping, and swimming.
• Skin is dry with glands but in the tail region, oil glands are present.
• Endoskeleton is bony and they have long bones that are hollow.
• The digestive tract in birds has an additional chamber called crop and gizzard.
• The gizzard is a thick-walled organ and is used for grinding food, and stones.
• The crop is a thin-walled organ and stores food prior to digestion.
• Some examples of class Aves are Pavo (Peacock), Psittacula (Parrot), and Corvus (Crow).
• So, the correct answer is option 1.

Additional Information:

• Crocodilus, Bungarus, and Chameleon belong to Class Reptilia.
• Bufo belongs to class Amphibia
• Columba belongs to class Aves.
• Balaenoptera belongs to the class Mammalia.
• Catla belongs to class Osteichthyes.