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प्रश्न
Define excretion. Name the excretory unit of a kidney.
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उत्तर
The process of removing waste products from the body of an organism is called excretion. The excretory unit of the kidney is nephron.
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संबंधित प्रश्न
The Biological/technical term for The removal of nitrogenous wastes from the body
The diagram given below shows a section of human kidney. Study the diagram carefully and answer the questions that follow :
(i) Label the parts numbered 1 to 4.
(ii) Why does part ‘2’ have a striped appearance?
(iii) What is the fluid that passes down part ‘4’? Name the main nitrogenous waste present in it.
(iv) Mention the structural and functional units of kidneys.
(v) Name the two major steps in the formation of the fluid mentioned in Q.5 (a) (iii).
The given diagram represents a nephron and its blood supply. Study the diagram and answer the following questions:
(i) Label parts 1, 2, 3 and 4.
(ii) State the reason for the high hydrostatic pressure in the glomerulus.
(iii) Name the blood vessel which contains the least amount of urea in this diagram.
(iv) Name the two main stages of urine formation.
(v) Name the part of the nephron which lies in the renal medulla.
Draw the well-labelled diagram of the human excretory system
State whether the following statement is true or false:
Some organisms store wastes in body parts.
Why do some people need to use a dialysis machine? What does the machine do?
A dialysis machine contains long tubes coiled in a tank containing dialysing solution
What does the dialysing solution contain?
The organs A of a person have been damaged completely due to which too much of a poisonous waste material B has started accumulating in his blood, making it dirty. In order to save this person's life, the blood from an artery in the person's arm is made to flow into long tubes made of substance E which are kept in coiled form in a tank containing solution F. This solution contains three materials G, H and I in similar proportions to those in normal blood. As the person's blood passes through long tubes of substance E, most of the wastes present in it go into solution. The clean blood is then put back into a vein in the arm of the person for circulation.
(a) What are organs A?
(b) Name the waste substance B.
(c) What are (i) E, and (ii) F?
(d) Name G, H and I.
(e) What is the process described above known as?
Write down the functional activity of the following parts,
Henle's loop ………………
Define the following term:
Osmoregulation
Study the diagram given alongside and then answer the question that follow:
Name the region in the kidney where the above structure is present?
The following diagram represents a mammalian kidney tubule (nephron) and its blood supply.
Parts indicated by the guidelines 1 to 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:
Where does ultrafiltration take place?
Differentiate between:
The Renal artery and the Renal vein.
Name the Following
The division of the kidney which is light in colour and subdivided into conical renal pyramids.
Name the Following
The branch of renal artery which enters into Bowman’s capsule.
Give Technical Term:
The organ which filters out urea and uric acid from the bloodstream.
Complete the diagram/chart with correct labels/ information. Write the conceptual details regarding it.
Give two examples of the following:
Nitrogenous waste
Give two examples of the following:
Water-soluble vitamins
