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प्रश्न
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.
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उत्तर
(i) Separation and elimination of the metabolic nitrogenous wastes from the body is called excretion.
(ii) Nephron.
(iii) The cortex of kidney shows dotted appearance because it contains numerous complex structures called nephrons.
(iv) Formation of urine and osmoregulation are important functions of kidney.
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संबंधित प्रश्न
How is the amount of urine produced regulated?
Name the basic filtration unit present in the kidney.
State whether the following statement is true or false:
Some organisms store wastes in body parts.
A dialysis machine contains long tubes coiled in a tank containing dialysing solution Of what substance are the tubes made?
How are waste products excreted in Amoeba?
Name the following:
The vein in which urea concentration is maximum
Explain the difference between the excretory system of humans and plants.
Choose the odd one out in the following serie:
Column of Bertini, minora calyces, brain.
“All plants give out oxygen during the day and carbon dioxide during the night”. Do you agree with this statement? Give a reason.
What would happen if green plants disappeared from earth?
