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Single Answer MCQ
Q-00020078

What is double circulation?

1

Blood passing through the heart twice

2

Two types of blood in circulation

3

Blood flow through two lungs

4

Circulation in two different organs

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Sandeep Chaturvedi

Sandeep Chaturvedi

CBSE Social Science & Humanities Reviewer

Social science and humanities educator with 14+ years of experience reviewing CBSE SST, economics, commerce, arts, and vocational content.

M.A. HistoryM.A. Political ScienceB.Ed.

Answer and Solution

Answer

A. Blood passing through the heart twice

Solution:

Double circulation refers to the process where blood passes through the heart twice in one complete circuit—once to the lungs for oxygenation and then to the rest of the body. This ensures efficient oxygen transport.

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