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Assignment for Class 11 Biology Chapter 19 Excretory Products And Their Elimination
Class 11 Biology students should refer to the following printable assignment in Pdf for Chapter 19 Excretory Products And Their Elimination in Class 11. This test paper with questions and answers for Class 11 Biology will be very useful for exams and help you to score good marks
Chapter 19 Excretory Products And Their Elimination Class 11 Biology Assignment
Important Questions for NCERT Class 11 Biology Excretory Products and Their Elimination
Ques. Proximal and distal convoluted tubules are parts of
(a) seminiferous tubules
(b) nephron
(c) oviduct
(d) vas deferens.
Answer: B
Ques. The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule is
(a) 50 mm Hg (b) 75 mm Hg
(c) 20 mm Hg (d) 30 mm Hg.
Answer: C
Ques. Which of the following statements is correct?
(a) The descending limb of loop of Henle is impermeable to water.
(b) The ascending limb of loop of Henle is permeable to water.
(c) The descending limb of loop of Henle is permeable to electrolytes.
(d) The ascending limb of loop of Henle is impermeable to water.
Answer: D
Ques. The part of nephron involved in active reabsorption of sodium is
(a) distal convoluted tubule
(b) proximal convoluted tubule
(c) Bowman’s capsule
(d) descending limb of Henle’s loop.
Answer: B
Ques. Removal of proximal convoluted tubule from the nephron will result in
(a) no change in quality and quantity of urine
(b) no urine formation
(c) more diluted urine
(d) more concentrated urine.
Answer: C
Ques. The maximum amount of electrolytes and water (70 – 80 percent) from the glomerular filtrate is reabsorbed in which part of the nephron?
(a) Ascending limb of loop of Henle
(b) Distal convoluted tubule
(c) Proximal convoluted tubule
(d) Descending limb of loop of Henle
Answer: C
Ques. Which one of the following correctly explains the function of a specific part of the human nephron?
(a) Podocytes : create minute spaces (slit pores) for the filtration of blood into the Bowman’s capsule
(b) Henle’s loop : most reabsorption of the major substances from the glomerular filtrate
(c) Distal convoluted tubule : reabsorption of K+ ions into the surrounding blood capillaries
(d) Afferent arteriole : carries the blood away from the glomerulus towards renal vein.
Answer: A
Ques. Which one of the following statements in regard to the excretion by the human kidneys is correct?
(a) Descending limb of loop of Henle is impermeable to water.
(b) Distal convoluted tubule is incapable of reabsorbing HCO3–.
(c) Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.
(d) Ascending limb of loop of Henle is impermeable to electrolytes.
Answer: C
Ques. Glucose is taken back from glomerular filtrate through
(a) active transport (b) passive transport
(c) osmosis (d) diffusion.
Answer: A
Ques. Under normal conditions which one is completely reabsorbed in the renal tubule?
(a) Urea (b) Uric acid
(c) Salts (d) Glucose
Answer: D
Ques. Brush border is characteristic of
(a) neck of nephron
(b) collecting tube
(c) proximal convoluted tubule
(d) all of these.
Answer: C
Ques. Reabsorption of useful substances from glomerular filtrate occurs in
(a) collecting tube
(b) loop of Henle
(c) proximal convoluted tubule
(d) distal convoluted tubule.
Answer: C
Ques. Which of the following factors is responsible for the formation of concentrated urine?
(a) Hydrostatic pressure during glomerular filtration.
(b) Low levels of antidiuretic hormone.
(c) Maintaining hyperosmolarity towards the medullary interstitium in the kidneys.
(d) Secretion of erythropoietin by Juxtaglomerular complex.
Answer: C
Ques. If Henle’s loop were absent from mammalian nephron, which one of the following is to be expected ?
(a) There will be no urine formation.
(b) There will be hardly any change in the quality and quantity of urine formed .
(c) The urine will be more concentrated.
(d) The urine will be more dilute.
Answer: D
Ques. Concentration of urine depends upon which organ?
(a) Bowman’s capsule
(b) Length of Henle’s loop
(c) PCT
(d) Network of capillaries arising from glomerulus
Answer: B
Ques. Which of the following would help in prevention of diuresis?
(a) More water reabsorption due to undersecretion of ADH.
(b) Reabsorption of Na+ and water from renal tubules due to aldosterone.
(c) Atrial natriuretic factor causes vasoconstriction.
(d) Decrease in secretion of renin by JG cells.
Answer: B
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CBSE Class 11 Biology Chapter 19 Excretory Products And Their Elimination Assignment
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Assignment for Biology CBSE Class 11 Chapter 19 Excretory Products And Their Elimination
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Chapter 19 Excretory Products And Their Elimination Assignment Biology CBSE Class 11
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Chapter 19 Excretory Products And Their Elimination Assignment CBSE Class 11 Biology
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CBSE Biology Class 11 Chapter 19 Excretory Products And Their Elimination Assignment
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