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Question
Study the diagram given alongside and then answer the question that follow:
Name the stages involved in the formation of urine.
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Solution
Urine formation occurs in two steps - ultrafiltration and reabsorption.
RELATED QUESTIONS
Match structures given in Column I with functions given in Column II.
| Column I | Column II | ||
| (i) | Stomata | (a) | Absorption of water |
| (ii) | Xylem | (b) | Transpiration |
| (iii) | Root hairs | (c) | Transport of food |
| (iv) | Phloem | (d) | Transport of water |
| (e) | Synthesis of carbohydrates |
With which human organ system (or human systems) is the glomerulus associated?
In summer the urine is slightly thicker than in winter explain the reason.
Explain in your own words with suitable examples.
How is excretion in plants useful to human beings?
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?
Write the functional activity of the following structure:
Glomerulus
Osmoregulation maintains the osmolarity of blood at about ______.
The mode of excretion of nitrogenous wastes like ammonia which takes place by simple diffusion is called ______.
The number of ATP molecules required to produce one molecule of urea from the omithine cycle.
Bilirubin and Biliverdin are pigments which are ____________.
