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Question
Give two examples of the following:
Main excretory organs
Solution
- Kidneys
- Lungs
RELATED QUESTIONS
Explain Selective reabsorption
Choose the correct answer:
Composition of extracellular fluid is regulated by ___________
Describe in brief how urine is produced in the human body.
The diagram below represents a mammalian kidney tubule (nephron) and its blood supply. Parts indicated by the guidelines 1 to 8 are as follows:
1. U-shaped loop of Henle
2. Proximal convoluted tubule with blood capillaries
3. Bowman’s capsule
4. Afferent arteriole from the renal artery
5. Glomerulus
6. Venule to the renal vein
7. Collecting tubule
8. Distal convoluted tubule with blood capillaries Study the diagram and answer the following questions in each case:
(i) Where does ultrafiltration take place?
(ii) Which structure contains the lowest concentration of urea?
(iii) Which structure contains the highest concentration of urea?
(iv) Which structure contains the lowest concentration of glucose?
(v) Where is the most water reabsorbed?
Write the functional activity of the following structure:
Glomerulus
The tadpole of frog lives in water, hence its mode of excretion is ______.
Why is the rate of breathing in aquatic organisms much faster than in terrestrial organisms?
Explain the importance of soil for plant growth.
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Nitrogenous waste
An organ that produces urea:
