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Excretion in Animals Video Lecture | Science & Technology for UPSC CSE

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FAQs on Excretion in Animals Video Lecture - Science & Technology for UPSC CSE

1. What is excretion in animals?
Ans. Excretion in animals refers to the process of eliminating waste products from their bodies. It is a vital function that helps maintain the internal balance and health of the animal. These waste products can include metabolic byproducts, such as carbon dioxide and urea, as well as toxins and excess water.
2. How do animals excrete waste?
Ans. Animals excrete waste through various organs and systems depending on their complexity. For example, simple organisms like amoebas excrete waste through their cell membranes, while more complex animals have specialized organs such as kidneys, lungs, and skin for excretion. The kidneys filter waste from the blood, the lungs eliminate carbon dioxide, and the skin excretes sweat and other waste products.
3. 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, toxins, metabolic waste, and other substances that need to be eliminated from the body. The urine produced by the kidneys is then transported to the bladder and eventually expelled from the body through the urethra.
4. Can animals excrete through their skin?
Ans. Yes, some animals can excrete waste products through their skin. This process is known as dermal excretion. For example, amphibians like frogs and salamanders excrete waste, including urea and ammonia, through their skin. Additionally, some marine animals, such as fish and rays, excrete waste through their gills and skin.
5. What happens if excretion is compromised in animals?
Ans. If excretion is compromised in animals, it can lead to a buildup of waste products in the body, which can be harmful or even fatal. For example, kidney failure in animals can result in a buildup of toxins, electrolyte imbalances, and fluid retention. Similarly, if an animal's respiratory system is compromised, it may struggle to eliminate carbon dioxide effectively, leading to respiratory acidosis. Therefore, proper excretion is essential for an animal's overall health and well-being.
146 videos|355 docs|249 tests

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