Class 11 Biology Body Fluids and Circulations Structure and function of heart

Easy

What is the function of valves in the heart?

A
To pump blood to the lungs.
B
To prevent the backward flow of blood.
C
To increase the heart rate.
D
To store oxygenated blood.

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Class 11 Questions

Class 11

Biology Questions

Chapter

Body Fluids and Circulations

Subtopic

Structure and function of heart

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