The blood vascular system of mammals is known as a double circulatory system because

  • A
    $A$ group of veins carries oxygenated blood and another group carries deoxygenated blood.
  • B
    Oxygenated blood passes through the heart twice in one complete cycle.
  • C
    The systemic and pulmonary circulations are completely separated.
  • D
    Blood passes through the heart twice in each complete cycle of the body.

Explore More

Similar Questions

The circulatory pattern,in which blood pumped by the heart passes through large vessels into open spaces or body cavities called sinuses,is called $.......$ and it is found in $........$

What is called incomplete double circulation?

In amphibians and reptiles,the $A$ atrium receives oxygenated blood from the gills/lungs/skin and $B$ atrium gets the $C$ blood from other body parts. Choose the correct option for $A$,$B$,and $C$.

Write the differences between open and closed systems of circulation.

Double circulation is

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo