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Excretory Products & their Elimination in One Shot (NCERT) Video Lecture | Biology Class 11 - NEET

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FAQs on Excretory Products & their Elimination in One Shot (NCERT) Video Lecture - 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 homeostasis and prevent the build-up of harmful substances.
2. How do living organisms eliminate excretory products?
Ans. Living organisms eliminate excretory products through various excretory organs and systems. In humans, the excretory system includes organs such as the kidneys, lungs, skin, and liver. The kidneys filter waste products from the blood and excrete them as urine, while the lungs eliminate carbon dioxide through respiration. The skin eliminates waste products through sweat, and the liver processes and eliminates metabolic waste through bile.
3. What is the role of the kidneys in the elimination of excretory products?
Ans. The kidneys play a crucial role in the elimination of excretory products. They filter waste products, excess water, and toxins from the blood to form urine. The urine is then transported to the bladder for temporary storage before being eliminated from the body through the urethra. The kidneys also help in maintaining the balance of electrolytes, pH, and fluid levels in the body.
4. Why is the elimination of excretory products important for living organisms?
Ans. The elimination of excretory products is essential for living organisms as it helps maintain homeostasis and prevents the accumulation of harmful substances. These waste products, if not eliminated, can lead to the build-up of toxins and metabolic by-products, which can disrupt normal bodily functions and cause diseases. By eliminating excretory products, the body ensures the proper functioning of various organs and systems.
5. How does the liver contribute to the elimination of excretory products?
Ans. The liver plays a significant role in the elimination of excretory products. It processes various metabolic waste products and toxins, converting them into less harmful substances or forms that can be easily excreted from the body. The liver produces bile, which helps in the breakdown and elimination of waste products, especially those derived from the breakdown of hemoglobin and drugs. Additionally, the liver detoxifies many harmful substances, making them more suitable for elimination by other excretory organs.
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