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प्रश्न
Why is it necessary to excrete waste products?
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उत्तर
- Certain waste and toxic products are formed during the functioning of body cells. Waste products like urea are toxic.
- When these toxic materials are not removed from the body, they get mixed with blood and can damage the cells of the body.
- It is necessary to remove such poisonous waste materials from our bodies.
- Some harmful substances are produced in the body as part of biological processes. It is very important to remove them from the body, otherwise poison will be produced in the body which can lead to death.
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संबंधित प्रश्न
Give biological reasons for the following statements: There is frequent urination in winter than in summer
The nephrons discharge their urine at ______.
The diagram given alongside shows a section of a human kidney. Study the diagram carefully and answer the questions that follow:
- Label the parts numbered 1 to 4.
- Why does part 2 have a striped appearance?
- What is the fluid that passes down part 4? Name the main nitrogenous waste present in it.
- Mention the structural and functional units of kidneys.
- Name the two major steps in the formation of the fluid mentioned in (c).
What job is done by the kidneys?
What is the name of the tubes which connect the kidneys to bladder?
Write True (T) or False (F) for the following statement. Rewrite the false statement in the correct form.
Urine is devoid of blood cells.
Fill in the blanks in the following passage to make it a meaningful description.
In a nephron, the ______ flows through the ______ under great pressure. The reason for this great pressure is that the ______ (outgoing) ______ is narrower than the ______ (incoming). This high pressure causes the ______ part of the blood to filter out from the ______ into the ______ capsule.
Write the functional activity of the following structure: Kidney
Complete the diagram/chart with correct labels/ information. Write the conceptual details regarding it.
Give two examples of the following:
Bile pigments
