Question

Write the difference between open and closed circulatory system.

Answer 1

The circulatory system is a system through which the multicellular organism transports oxygen and nutrients in the body. The main difference between the open and closed circulatory system is the way of blood flow in an organism. Open circulation of blood is primarily found in invertebrates. Closed circulatory system is found in vertebrates and some invertebrates like earthworms

complete Explanation:

Open circulatory system	Closed circulatory system
In an organism, when there are no vessels to contain the blood and it flows freely over the organs, it is called open circulation.	In an organism, if blood flows through vessels such as arteries and veins inside the body then that type of circulation is called closed circulation.
Open circulatory system is commonly seen in arthropods and mollusks.	Closed circulatory systems are seen in higher vertebrates and some invertebrates like earthworm.
The heart directly pumps blood into hemocoel and the blood flows freely throughout the body tissues.	The heart pumps blood through a continuous circulation pattern. In this circulation the blood does not fill body cavities.
Animals with an open circulatory system are usually small organisms, so that the blood doesn’t have to travel far.	Animals with a closed circulatory system are larger in nature.
These animals have lower metabolisms and a poorly developed immune system.	These animals have higher metabolisms and a well-developed immune system.
They don’t have any secondary systems.	They have a secondary system known as the lymphatic system.
Here the blood flow will be slow.	The blood flow is fast and rapid.
Transport of gases does not occur.	Transport of gases occurs.

Note:
The closed circulatory system is made up of a network of arteries, veins, and capillaries. The heart pumps blood through it. The primary role of this system is to provide nutrients, minerals, and hormones to various parts of the body. It is also responsible for collecting metabolic waste and toxins from the cells and tissues. It also carries oxygenated and deoxygenated blood to various parts of the body.