Given below is a simple diagram of the human kidney cut open longitudinally.

Hi, I have a question and I hope anyone could answer it:

Given below is a simple diagram of the human kidney cut open longitudinally. Answer the following questions:
excretory-system-icse-solutions-class-10-biology-6

(i) Give the definition of excretion.
(ii) Name the units of the kidney.
(iii) Why does the cortex of the kidney show a ‘dotted’ appearance ?
(iv) Mention two functions of the kidney.
(v) Write two differences in the composition of the blood flowing through blood vessels A and B.

1 Answer

  1. (a) The process of removal of chemical wastes especially nitrogenous waste from the body is known as excretion.
    (b) Nephrons
    (c) As the cortex region contains numerous nephrons or kidney tubules, therefore, it shows a dotted appearance.
    (d) Kidneys help in removing wastes or excretion and osmoregulation.
    (e) The blood vessel ‘B’ is the renal artery and the blood vessel ‘A’ is the renal vein.

    So the blood vessel ‘B’ contains oxygenated blood with a high concentration of urea and glucose whereas the blood vessel ‘A’ contains deoxygenated blood with a low concentration of urea and glucose as compared to the renal artery.

You must login to add an answer.

Related Questions