280076
Assertion: The epithelial cells of Bowman's capsule called podocytes.
Reason: In ultrafiltration process, blood is filtered in Bowman's capsule, filtered fluid contain protein & blood corpuscles also.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(b) Ultrafiltration takes place in renal corpuscle of uriniferous tubule. It takes place in presence of effective filtration pressure. During the process, blood is filtered and contains only blood plasma - proteins. The filtered blood entering into Bowman's capsule is called glomerular filtrate.
Glomerular filtrate $=$ Blood $-($ Blood corpuscles + plasma proteins)
NCERT Page-293 / N-208
Excretory Products and Their Elimination
280077
Assertion: In vertebrates, the liver is also referred as an accessory excretory organ.
Reason: Liver helps kidneys in the secretion of urine.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(b) In vertebrates, the lungs, liver & skin are referred as accessory excretory organs because besides the urinary system these organs also participate in the removal of waste products from the body. The liver is the principal organ for the excretion of cholesterol, bile pigments (bilirubin and biliverdin) and inactivated products of steroid hormones, some vitamins and many drugs. It secretes these substances in the bile and indirectly helps in formation of urea through amino acids in ornithine cycle. It has no role in secretion of urine.
NCERT Page-298 / N-213
Excretory Products and Their Elimination
280078
Assertion: Hemodialysis can save and prolong the life of uremic patients.
Reason: Waste products like urea can be removed from the blood by the process of hemodialysis.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(d)
NCERT Page-298 / N-213
Excretory Products and Their Elimination
280079
Assertion: In the descending limb of loop of Henle, the urine is hypertonic, whereas in ascending limb of loop of Henle, the urine is hypotonic.
Reason: Descending limb is impermeable to electrolytes, while ascending limb is impermeable to water.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
.
Explanation:
(d) Descending limb of loop of Henle is permeable to water but not to electrolytes. Consequently water moves out into interstitium and concentration of electrolytes in tubular filtrate rises making filtrate hypertonic. Ascending loop is impermeable to water but permeable to electrolytes and makes the filtrate hypotonic.
280076
Assertion: The epithelial cells of Bowman's capsule called podocytes.
Reason: In ultrafiltration process, blood is filtered in Bowman's capsule, filtered fluid contain protein & blood corpuscles also.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(b) Ultrafiltration takes place in renal corpuscle of uriniferous tubule. It takes place in presence of effective filtration pressure. During the process, blood is filtered and contains only blood plasma - proteins. The filtered blood entering into Bowman's capsule is called glomerular filtrate.
Glomerular filtrate $=$ Blood $-($ Blood corpuscles + plasma proteins)
NCERT Page-293 / N-208
Excretory Products and Their Elimination
280077
Assertion: In vertebrates, the liver is also referred as an accessory excretory organ.
Reason: Liver helps kidneys in the secretion of urine.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(b) In vertebrates, the lungs, liver & skin are referred as accessory excretory organs because besides the urinary system these organs also participate in the removal of waste products from the body. The liver is the principal organ for the excretion of cholesterol, bile pigments (bilirubin and biliverdin) and inactivated products of steroid hormones, some vitamins and many drugs. It secretes these substances in the bile and indirectly helps in formation of urea through amino acids in ornithine cycle. It has no role in secretion of urine.
NCERT Page-298 / N-213
Excretory Products and Their Elimination
280078
Assertion: Hemodialysis can save and prolong the life of uremic patients.
Reason: Waste products like urea can be removed from the blood by the process of hemodialysis.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(d)
NCERT Page-298 / N-213
Excretory Products and Their Elimination
280079
Assertion: In the descending limb of loop of Henle, the urine is hypertonic, whereas in ascending limb of loop of Henle, the urine is hypotonic.
Reason: Descending limb is impermeable to electrolytes, while ascending limb is impermeable to water.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
.
Explanation:
(d) Descending limb of loop of Henle is permeable to water but not to electrolytes. Consequently water moves out into interstitium and concentration of electrolytes in tubular filtrate rises making filtrate hypertonic. Ascending loop is impermeable to water but permeable to electrolytes and makes the filtrate hypotonic.
280076
Assertion: The epithelial cells of Bowman's capsule called podocytes.
Reason: In ultrafiltration process, blood is filtered in Bowman's capsule, filtered fluid contain protein & blood corpuscles also.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(b) Ultrafiltration takes place in renal corpuscle of uriniferous tubule. It takes place in presence of effective filtration pressure. During the process, blood is filtered and contains only blood plasma - proteins. The filtered blood entering into Bowman's capsule is called glomerular filtrate.
Glomerular filtrate $=$ Blood $-($ Blood corpuscles + plasma proteins)
NCERT Page-293 / N-208
Excretory Products and Their Elimination
280077
Assertion: In vertebrates, the liver is also referred as an accessory excretory organ.
Reason: Liver helps kidneys in the secretion of urine.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(b) In vertebrates, the lungs, liver & skin are referred as accessory excretory organs because besides the urinary system these organs also participate in the removal of waste products from the body. The liver is the principal organ for the excretion of cholesterol, bile pigments (bilirubin and biliverdin) and inactivated products of steroid hormones, some vitamins and many drugs. It secretes these substances in the bile and indirectly helps in formation of urea through amino acids in ornithine cycle. It has no role in secretion of urine.
NCERT Page-298 / N-213
Excretory Products and Their Elimination
280078
Assertion: Hemodialysis can save and prolong the life of uremic patients.
Reason: Waste products like urea can be removed from the blood by the process of hemodialysis.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(d)
NCERT Page-298 / N-213
Excretory Products and Their Elimination
280079
Assertion: In the descending limb of loop of Henle, the urine is hypertonic, whereas in ascending limb of loop of Henle, the urine is hypotonic.
Reason: Descending limb is impermeable to electrolytes, while ascending limb is impermeable to water.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
.
Explanation:
(d) Descending limb of loop of Henle is permeable to water but not to electrolytes. Consequently water moves out into interstitium and concentration of electrolytes in tubular filtrate rises making filtrate hypertonic. Ascending loop is impermeable to water but permeable to electrolytes and makes the filtrate hypotonic.
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Excretory Products and Their Elimination
280076
Assertion: The epithelial cells of Bowman's capsule called podocytes.
Reason: In ultrafiltration process, blood is filtered in Bowman's capsule, filtered fluid contain protein & blood corpuscles also.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(b) Ultrafiltration takes place in renal corpuscle of uriniferous tubule. It takes place in presence of effective filtration pressure. During the process, blood is filtered and contains only blood plasma - proteins. The filtered blood entering into Bowman's capsule is called glomerular filtrate.
Glomerular filtrate $=$ Blood $-($ Blood corpuscles + plasma proteins)
NCERT Page-293 / N-208
Excretory Products and Their Elimination
280077
Assertion: In vertebrates, the liver is also referred as an accessory excretory organ.
Reason: Liver helps kidneys in the secretion of urine.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(b) In vertebrates, the lungs, liver & skin are referred as accessory excretory organs because besides the urinary system these organs also participate in the removal of waste products from the body. The liver is the principal organ for the excretion of cholesterol, bile pigments (bilirubin and biliverdin) and inactivated products of steroid hormones, some vitamins and many drugs. It secretes these substances in the bile and indirectly helps in formation of urea through amino acids in ornithine cycle. It has no role in secretion of urine.
NCERT Page-298 / N-213
Excretory Products and Their Elimination
280078
Assertion: Hemodialysis can save and prolong the life of uremic patients.
Reason: Waste products like urea can be removed from the blood by the process of hemodialysis.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
Explanation:
(d)
NCERT Page-298 / N-213
Excretory Products and Their Elimination
280079
Assertion: In the descending limb of loop of Henle, the urine is hypertonic, whereas in ascending limb of loop of Henle, the urine is hypotonic.
Reason: Descending limb is impermeable to electrolytes, while ascending limb is impermeable to water.
1 Both (A) and (R) are correct but (R) is not the correct explanation of (A)
2 (A) is correct but (R) is not correct
3 (A) is not correct but (R) is correct
4 Both (A) and (R) are correct and (R) is the correct explanation of (A)
.
Explanation:
(d) Descending limb of loop of Henle is permeable to water but not to electrolytes. Consequently water moves out into interstitium and concentration of electrolytes in tubular filtrate rises making filtrate hypertonic. Ascending loop is impermeable to water but permeable to electrolytes and makes the filtrate hypotonic.