Advertisements
Advertisements
प्रश्न
Define excretion. Name the excretory unit of a kidney.
Advertisements
उत्तर
The process of removing waste products from the body of an organism is called excretion. The excretory unit of the kidney is nephron.
APPEARS IN
संबंधित प्रश्न
The kidneys in human beings are a part of the system for ______.
the Biological/technical term Pigment providing colour to urine.
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).
Blood in the renal artery or renal vein (Which one has more urea ?)
The diagram given below is that of a structure present in a human kidney.
Study the same and answer the questions that follow:
1) Name the structure represented in the diagram
2) What is the liquid entering part ‘1’ called?
Name two substances present in this liquid that are reabsorbed in the tubule.
3) What is the fluid that comes to part ‘2’ called?
Name the main nitrogenous waste in it.
4) Mention the three main steps involved in the formation of the fluid mentioned in (iii) above
5) Name the substance which may be present in the fluid in part ‘2’ if a person suffers from Diabetes mellitus.
Name a waste gas released by the plants only during the night time.
Fill in the following blank with suitable word:
The organs which extract the nitrogenous wastes from the blood are ..........
If a patient is out on dialysis, he is most likely suffering from a severe ailment of the:
(a) circulatory system
(b) respiratory system
(c) excretory system
(d) digestive system
Write True (T) or False (F) for the following statement. Rewrite the false statement in the correct form.
Urine is devoid of blood cells.
Name the following:
The part of kidney tubules where the term urine is first used for the fluid in it.
Name the following:
The vein in which urea concentration is maximum
Choose the correct answer:
A condition of failure of kidney to form urea is called ____________
Choose the odd one out in the following serie:
Column of Bertini, minora calyces, brain.
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 highest concentration of urea?
Name the Following
The substance found in excess in the urine of a diabetic patient.
State the Location: Renal pyramids
Choose the Odd One Out:
Two green plants are kept separately in oxygen-free containers, one in the dark and the other in continuous light. Which one will live longer? Give reasons.
What is the purpose of making urine in the human body?
The main nitrogenous waste formed in the human body:
