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प्रश्न
Give reason:
Excretion is a necessary process of our body.
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उत्तर
- Our bodies need to excrete urea, an extremely toxic nitrogenous waste product.
- Excessive accumulation in the bloodstream can result in death.
- The excretory substances include carbon dioxide (CO2) and water (H2O), nitrogenous metabolic waste, excess salts, and bile pigment.
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संबंधित प्रश्न
Describe the structure of nephrons.
Explain the difference between the excretory system of humans and plants.
Given below is a diagram of a human kidney, cut open longitudinally. Answer the following:
(i) Give definition of excretion.
(ii) Name the unit of kidney.
(iii) Why does the cortex of kidney show dotted appearance?
(iv) List the functions of the kidney.
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1to 8 are as follows:
1. Afferent arteriole from renal artery
2. Efferent arteriole
3. Bowman's capsule
4. Glomerulus
5. Proximal convoluted tubule with blood capillaries
6. Distal convoluted tubule with blood capillaries
7. Collecting tubule
8. U-shaped loop of Henle
Study the diagram and answer the question that follow:
Which structure (normally) contains the lowest concentration of glucose?
Name the Following
The division of the kidney which is light in colour and subdivided into conical renal pyramids.
Complete the following sentence with appropriate word:
The sum total of all the chemical reactions taking place in the cell is known as ______.
Choose the correct option.
Specific gravity of urine would _______ if level of ADH increases.
Bilirubin and Biliverdin are pigments which are ____________.
The main nitrogenous waste formed in the human body:
Salt excreting glands are found near ______ in marine birds like Albatross.
