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Select incorrect statement(s).

Option: 1

Fishes having 2-chambered heart


Option: 2

Crocodile having 3-chambered heart 


Option: 3

Mammals and aves are warm blooded


Option: 4

Number of bones in human are 206


Answers (1)

best_answer

 

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

 

Posted by

Devendra Khairwa

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