Incomplete double circulation found in
Amphibian
Crocodile
Reptiles
Both (1) and (3)
Working of heart in amphibians and reptiles -
In amphibians and reptiles, the left atrium receives oxygenated blood from the gills/lungs/skin and the right atrium gets the deoxygenated blood from other body parts. However, they get mixed up in the single ventricle which pumps out mixed blood
- wherein
This is called incomplete double circulation
Correct option is 4