In which of the following animals, digestive tract has additional chambers like crop and gizzard?
- Corvus, Columba, Chameleon
- Bufo, Balaenoptera, Bungarus
- Catla, Columba, Crocodilus
- Pavo, Psittacula, Corvus
Answer
(4) Pavo, Psittacula, Corvus
Solution
As per NCERT, the digestive tract of birds (class Aves) has additional chambers, the crop and the gizzard.
(1) Chameleon is a reptile.
(2) Bufo (toad) is an amphibian, Balaenoptera (blue whale) is a mammal and Bungarus (krait) is a reptile.
(3) Catla is a bony fish and Crocodilus is a reptile.
(4) Pavo (peacock), Psittacula (parrot) and Corvus (crow) are all birds.
Answer: (4)