Select incorrect statement(s).
Fishes having 2-chambered heart
Crocodile having 3-chambered heart
Mammals and aves are warm blooded
Number of bones in human are 206
Working of heart in fishes -
In fishes the heart pumps out deoxygenated blood which is oxygenated by the gills and supplied to the body parts from where deoxygenated blood is returned to the heart
- wherein
This is called (single circulation)
Correct option is 2