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Living Organisms and Excretion Video Lecture | Crash Course for Class 6

FAQs on Living Organisms and Excretion Video Lecture - Crash Course for Class 6

1. What is excretion in living organisms?

Ans. Excretion is the process by which living organisms remove waste products from their bodies. These waste products can be harmful if accumulated and include substances like carbon dioxide, urea, and excess salts. Different organisms have different methods of excretion, such as through the skin, lungs, or specialized organs like kidneys.

2. Why is excretion important for living organisms?

Ans. Excretion is crucial for maintaining homeostasis in living organisms. It helps regulate body temperature, balance fluids, and remove toxic substances that can harm cells. By eliminating waste, organisms can function properly and ensure their survival.

3. How do plants excrete waste?

Ans. Plants excrete waste mainly through transpiration and by shedding leaves, flowers, or fruits. They release oxygen as a byproduct of photosynthesis and may also excrete certain substances through their roots into the soil. Additionally, some plants can store waste in vacuoles or in the form of resins.

4. What are the main excretory organs in humans?

Ans. In humans, the main excretory organs are the kidneys, which filter blood to produce urine. Other important organs involved in excretion include the bladder, which stores urine until it is expelled, and the skin, which helps remove waste through sweat.

5. What are some common waste products excreted by animals?

Ans. Common waste products excreted by animals include carbon dioxide, urea, ammonia, and various salts. These substances result from metabolic processes and must be removed to keep the body's internal environment stable and functioning efficiently.

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Sep 26, 2025 Last updated

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