Question

How does open circulation takes place ?Answer in brief?​

Answer 1

Answer:

Open circulatory systems (evolved in insects, mollusks and other invertebrates) pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells. Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood. The resulting blood flow is sluggish.

Answer 2

Answer:

Open circulation takes place in lower organisms where all the circulatory organs are bathed in the body fluid

Oxygenated blood reaches the organs and deoxygeneted blood return back to large space of the body called as sinuses from where they are again pumped to the organs.