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प्रश्न
Answer the following question.
Why do we get bad breath after eating garlic or raw onion?
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उत्तर
- Raw onion and garlic contain volatile sulphur-containing compounds.
- Sulphur-containing compounds have a distinctive odour which remain in the mouth after consumption of onion and garlic.
- Also, volatile compounds (like certain sulphur containing compounds) in foodstuffs are generally excreted through the lungs and may result in bad breath.
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संबंधित प्रश्न
Match structures given in Column I with functions given in Column II.
| Column I | Column II | ||
| (i) | Stomata | (a) | Absorption of water |
| (ii) | Xylem | (b) | Transpiration |
| (iii) | Root hairs | (c) | Transport of food |
| (iv) | Phloem | (d) | Transport of water |
| (e) | Synthesis of carbohydrates |
the Biological/technical term Pigment providing colour to urine.
Explain Selective reabsorption
Why is excretion necessary in living beings?
Name the following:
The vein in which urea concentration is maximum
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 contains the lowest concentration of urea?
Write the functional activity of the following structure: Vasopressin
Choose the Odd One Out:
Choose the Odd One Out:
