Question: 151: In which of the following animals, digestive tract has additional chambers like crop and gizzard?
(1) Catla, Columba, Crocodilus
(2) Pavo, Psittacula, Corvus
(3) Corvus, Columba, Chameleon
(4) Bufo, Balaenoptera, Bangarus
Answer: Option (2)
Explanation:
Crop and gizzard are special chambers present in the digestive tract of birds.
The crop is used for temporary storage of food,
while the gizzard helps in grinding food mechanically.
Pavo (peacock), Psittacula (parrot), and Corvus (crow) are all birds.
Therefore, all animals listed in option (2) possess crop and gizzard.
The other options include fishes, reptiles, amphibians, or mammals,
which do not have both crop and gizzard.
Hence, the correct answer is option (2).