E. Answer the following questions in detail.
1. Explain the various life processes and the production of waste materials during these processes.
2. What are the various modes of elimination of wastes?
3. Describe the parts of excretory system of man with the help of a well-labelled diagram.
4. Discuss the process of urine formation in human beings.
5. Write the process and importance of dialysis.
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1. The oxygen during photosynthesis and carbon dioxide during respiration are given out through a structure called stomata. Excess water is removed by transpiration. They shed dead cells and even plant parts like leaves. Waste products are also stored in vacuoles and leaves that fall off.
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