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Mind Map: Excretory Products & their Elimination | Biology Class 11 - NEET PDF Download

Mind Map: Excretory Products & their Elimination | Biology Class 11 - NEET

The document Mind Map: Excretory Products & their Elimination | Biology Class 11 - NEET is a part of the NEET Course Biology Class 11.
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FAQs on Mind Map: Excretory Products & their Elimination - Biology Class 11 - NEET

1. What are excretory products?
Ans. Excretory products are waste substances produced by the cells of living organisms as a result of their metabolic activities. These waste products need to be eliminated from the body to maintain the proper functioning of the organism.
2. What are the main excretory products in humans?
Ans. In humans, the main excretory products are urea, uric acid, and creatinine. Urea is produced in the liver from the breakdown of proteins, while uric acid is formed from the breakdown of nucleic acids. Creatinine is a waste product of muscle metabolism.
3. How are excretory products eliminated from the human body?
Ans. Excretory products are eliminated from the human body through various excretory organs. Urea and other water-soluble waste products are primarily eliminated by the kidneys through urine. Carbon dioxide, a waste product of cellular respiration, is eliminated through the lungs during exhalation. Sweat glands in the skin help eliminate water, salts, and other waste products through sweat.
4. What is the role of the kidneys in excretion?
Ans. The kidneys play a crucial role in excretion by filtering waste products from the blood and producing urine. They remove excess water, urea, uric acid, and other waste substances from the bloodstream. The kidneys also help maintain the balance of electrolytes, pH, and water in the body.
5. Can excretory products be reused or recycled by the body?
Ans. While excretory products are waste substances, some of them can be recycled or reused by the body. For example, urea can be broken down by bacteria in the intestines to produce ammonia, which can then be used by certain organisms as a source of nitrogen. Additionally, the water and electrolytes eliminated through sweat can be reabsorbed by the body to maintain fluid balance. However, the majority of excretory products are eliminated from the body as they cannot be reused.
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