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A: In frog, sinus-venosus is present. ...

A: In frog, sinus-venosus is present.
R: In mammals and birds are remnant of sinus venosus has taken part in the formation of SA node.

A

IF both assertion & Reason are true and the rason is the correct explanation of the assertion

B

If both assertion & reason are true but the reason is not the correct explanation of the assertion, then mark

C

If assertion is true statement but reason is false, then mark

D

if both assertion and reason are false statement

Text Solution

Verified by Experts

The correct Answer is:
B
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