Revision Notes For For Class 11 Biology Chapter 18 Body Fluids And Circulation

Blood is the only fluid connective tissues which are involved in circulating and transporting nutrients, respiratory gases, hormones, and other essential molecules within the cells, tissues, and organs. The complete process of circulation is controlled by the circulatory system.

The human circulatory system is mainly composed of the heart, blood cells, lymph, and the blood vessels. There are two types of circulatory system: Open circulatory system and closed circulatory system. The main functions of the human circulatory system are:

  • Transports nutrients from their sites of absorption to different tissues and organs.
  • Carries waste products from different tissues to the organs to the excretory system.
  • It uniformly distributes water, H+, and other chemical substances to all over the body.
  • It is also involved in transporting hormones, from their sites of production to the tissues.

Check here for the free CBSE Class 11 Biology revision notes for the Chapter 18-Body Fluids and Circulation.

Class 11 Biology Chapter 18 - Body Fluids and Circulation
Class 11 Biology Chapter 18 - Body Fluids and Circulation

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Practise This Question

___ biodiversity refers to differences in DNA among individuals of the same species.