Simple organisms like sponges and coelenterates circulate water from their surroundings through their body cavities to facilitate the cells to exchange these substances. More complex organisms use special fluids within their bodies to transport such materials. Another body fluid, lymph, also helps in the transport of certain substances. In this chapter, you will learn about the composition and properties of blood and lymph (tissue fluid) and the mechanism of circulation of blood is also explained herein. Download and read the NCERT book for Class 11 Biology chapter 18 on body fluids and circulation. Find questions, answers, diagrams and explanations for this topic. NCERT Book Class 11 Biology Chapter 18: Body fluids and circulation in Hindi and English Medium in PDF form download here. NCERT sets the academic syllabus for the Class 11 board exams, and their books are prescribed to CBSE students.
