Question

All living organisms need a few necessary components like air, water, and food for their survival. On our regular basis, animals

ensure these elements by breathing, drinking and eating. The required elements are transported to their body cells and tissues by a

transportation system.

Transportation in humans is done by the circulatory system. The circulatory system in humans mainly consists of blood, blood

vessels and heart. It is responsible for the supply of oxygen, nutrients, removal of carbon dioxide and other excretory products.In the human body, blood circulates through the heart twice. Once it goes through the heart during pulmonary circulation and

second time during systemic circulation. Hence, circulation in human beings is called double circulation.

i) Define double circulation process. 1

ii) How different elements are transported in living beings? 1

iii) Name major components of circulatory system in human beings. 1

iv) State two major division of double circulation process.​

Answer 1

Answer:

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