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Standard XII
Biology
Question

Effective filtration pressure in glomerulus is caused due to
  1. Powerful pumping action of the heart
  2. Secretion of adrenaline
  3. Afferent arteriole has slightly larger diameter than efferent arteriole
  4. Vacuum develops in proximal convoluted tubule and sucks the blood

A
Afferent arteriole has slightly larger diameter than efferent arteriole
B
Powerful pumping action of the heart
C
Secretion of adrenaline
D
Vacuum develops in proximal convoluted tubule and sucks the blood
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Q1

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 questions that follow:
(e) Where is most water reabsorbed?
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Q2
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 questions that follow:
When is most water reabsorbed?

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Q3
Pick the odd ones in each of the following groups and select the correct option.
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Parts indicated by the guidelines 1 to 8 are as follows:
1. Afferent arteriole from renal artery;
2. Efferent arteriole
3. Bowman’s capsule,
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Study the diagram and answer the questions that follow:
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Ultra filtration is due to pressure in the glomerulus because the diameter of afferent arteriole is greater than
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