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प्रश्न
Answer the following question.
Name any one guanotelic organism.
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उत्तर
Spiders, scorpions and penguins are guanotelic organisms as they excrete guanine.
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संबंधित प्रश्न
Explain the term haemodialysis.
State whether the following statement is true or false:
Some organisms store wastes in body parts.
Bowman’s capsule and tubule taken together make a ______.
A dialysis machine contains long tubes coiled in a tank containing dialysing solution:
Of what substance are the tubes made?
The substance which is not reabsorbed into the blood capillaries surrounding the tuble of a nephron is mainly ______.
Fill in the blank :
Nitrogenous wastes in the urine are in the form of urea and .....................
Why is excretion necessary in living beings?
Study the diagram given alongside and then answer the question that follow:
What is the technical term given to the process occurring in 2 and 3? Briefly describe the process.
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?
Among the following animals, the best conserver of water is ______.
