Question

Name one animal having single circulation of blood and another having double circulation.

Answer 1

animal having single circulation of blood : fish

animal having double circulation of blood : humans

Answer 2

Answer:

Single circulation: Fish

Double circulation: Human

Explanation:

• In fishes, the blood circulation passes through the heart one time while in human, blood flows twice.
• In humans, a mix of oxygenated and non-oxygenated blood flows through the heart while in fish, only venous blood flows.
• In humans, blood flows at higher pressure while in fish, blood flows at lower pressure.
• Cells present in fishes get low oxygen compared to humans.
• Single circulation is present only in fish while double circulation is present in many vertebrates.