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प्रश्न
In summer the urine is slightly thicker than in winter explain the reason.
उत्तर
During summer, a considerable part of water is lost through perspiration so the kidneys have to reabsorb more water from the urine. This makes the urine thicker in summer than in winters.
संबंधित प्रश्न
Differentiate between the following pair on the basis of what is indicated in the bracket.
Ureter and Urethra [function]
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Draw a neat labelled diagram of the human excretory system.
In which of the following are the largest amounts of nitrogen excreted from a mammalian body?
(a) breath
(b) sweat
(c) urine
(d) faeces
Fill in the blank :
Nitrogenous wastes in the urine are in the form of urea and .....................
Why is excretion necessary in living beings?
Given below is a simplified diagram of the human kidney cut open longitudinally. Answer the questions that follow.
 |
- Define excretion.
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- Why does the medulla of the kidney show a striped appearance?
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