Biology Multiple Choice Questions and Answers for Different Competitive Exams

MCQ on Excretory Products and their Elimination

1. The final product of ornithine cycle is
a) citrulline
b) urea

2.In which part of nephron, reabsorption of glucose is maximum from filtrate?
a)Henle’s loop
b)Distal convoluted tubule
c)seminiferous tubules
d)Proximal convoluted tubule

3. Functional kidney of mammals is
a)archinephros type
b)metanephros type
c)pronephros type
d)ophisthosnephros type
MCQ on Excretory Products and their elimination-mcq on excretory system

4. The maximum amount of electrolytes and water(70-80%) from the glomerular filtrate is reabsorbed in which part of the nephron?
a)Ascending limb of loop of Henle
b) Distal convoluted tubule
c) Descending limb of loop of Henle
d) Proximal convoluted tubule

5.The peritubular capillaries of the nephron arise from the
a)afferent arteriole
b) efferent arteriole
c) renal artery
d)arcuate artery

6.Which of the following is true for excretion in humans?
a) Glucose and aminoacids are reabsorbed in PCT by simple diffusion
b)DCT is impermeable to water
c)on an average, 25-30 gm of urea is excreted out per day
d)Maximum reabsorption occurs in the loop of Henle

7. A fall in GFR (glomerular filtration rate) activates
a)juxtaglomerular cells to release renin
b)adrenal cortex to release aldosterone
c)adrenal medulla to release adrenaline
d)posterior pituitairy to release vasopressin

8.Which one of the following characteristics is common both in humans and adult frogs?
a)four chambered heart
b)internal fertilization
c)nucleated RBCs
d)ureotelic mode of excretion

9. Loop of Henle is found in

10. Fresh water bony fishes maintain water balance by
a) excreting a hypotonic urine
b) drinking small amount of water
c)excreting salt across their gills
d)excreting wastes in the form of uric acid
Learn more: 
1. b) urea
2. d)Proximal convoluted tubule
3. b)metanephros type
4. d) Proximal convoluted tubule
5. b) efferent arteriole
6. c)on an average, 25-30 gm of urea is excreted out per day
7. a)juxtaglomerular cells to release renin
8. d)ureotelic mode of excretion
9. d)nephron
10. a) excreting a hypotonic urine

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