Multiple choice

Which among the following does not characterise the open circulatory system?

  1. Blood flows with high velocity in the body.

  2. Direct exchange of materials between the cells and the blood in the body.

  3. RBCs are absent in the blood.

  4. The blood flows from the heart into the arteries.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In open circulatory system, the blood usually flows at a very low velocity and at low pressure as the smooth muscles are absent .

Keep practicing — related questions