b) The septum that divides the two ventricles can be named as___________.

c) The septum that divides the atrium and ventricle can be named as________.

The holes that connect two chambers are called apertures.< Let us try to name the apertures which connect the atria and ventricles.

The holes that connect two chambers are called apertures. Let us try to name the apertures which connect the atria and ventricles.

d) The aperture that connects the right atrium and right ventricle can be named as_______.

e) The aperture that connects the left atrium and left ventricle can be named_______.

Any structure that closes an aperture, and allows one way movement of materials is called as valve . Now let us name the valves that are present in the chambers of the heart

) The valve that is present between left atrium and left ventricle can be named as____________.

g) The valve that is present between right atrium and right ventricle can be named as ___________.

14. If the valves in veins of the legs fail to stop the flow of blood what could be the consequences of this failure?(AS2

15. What would happen if cell sap in the cells of root hair contain a high concentration of ions?(AS2)

16. John made a stethoscope using a paper cup and plastic tube. Write down the procedure he followed. (AS3)