MCQ Questions for Class 11 Biology: Ch 19 Excretory Products and their Elimination
1. Diameter of the renal afferent arterioles is
(a) Same as that of efferent
(b) Smaller than that of efferent
(c) Larger than that of efferent
(d) There is no efferent vessel
► (c) Larger than that of efferent
2. Which pair is correct-
(a) Sweat = temperature regulation
(b) Saliva = sense of food taste
(c) Sebum = sexual attraction
(d) Humerus = Hind leg
► (a) Sweat = temperature regulation
3. Excretory material are formed in
(a) Kidney
(b) Rectum
(c) Liver
(d) Every body cell
► (d) Every body cell
4. The principal nitrogenous excretory compound in humans is synthesised
(a) in kidneys but eliminated mostly through liver
(b) in kidneys as well as eliminated by kidneys
(c) in liver and also eliminated by the same through bile
(d) in the liver, but eliminated mostly through kidneys
► (d) in the liver, but eliminated mostly through kidneys
5. The retroperitoneal kidney is -
(a) Kidney of fish
(b) Kidney covered by Peritoneum on Dorsal side
(c) Kidney covered by Peritoneum on ventral side
(d) Kidney uncovered by Peritoneum on ventral Side.
► (c) Kidney covered by Peritoneum on ventral side
6. Nephron is made up of
(a) Malpighian body
(b) Coiled tuble
(c) Both of the above
(d) None of the above
► (c) Both of the above
7. Excretory products of mammalian embryo are eliminated by-
(a) Placenta
(b) Amniotic fluid
(c) Allantois
(d) Ureters
► (a) Placenta
8. Kidney is
(a) Ectodermal
(b) Mesodermal
(c) Endodermal
(d) None of the above
► (b) Mesodermal
9. Ammonia is the main nitrogenous excretory material in
(a) Amphibians
(b) Aves
(c) Tadpoles
(d) Reptiles
► (c) Tadpoles
10. Malpighian corpuscles are present in :–
(a) Cortex
(b) Medulla
(c) Germinal cells
(d) None of the above
► (a) Cortex
11. The basic functional unit of the human kidney is:
(a) Nephron
(b) Nephridia
(c) Pyramid
(d) Henle's loop
► (a) Nephron
12. If Henle's loop were absent from mammalian nephron, which of the following is to be expected?
(a) The urine will be more dilute
(b) There will be no urine formation
(c) There will be hardly any change in the quality and quantity of urine formed
(d) The urine will be more concentrated
► (a) The urine will be more dilute
13. Excretion is
(a) Removal of substances not required by body
(b) Removal of useless substances and susbtances present in excess
(c) Formation of substances having some role in body
(d) All the above
► (b) Removal of useless substances and susbtances present in excess
14. 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
► (c) 20 mm Hg
15. Podocyte are present in
(a) Afferent arteriole
(b) Efferent arteriole
(c) Peritubular network
(d) Bowman's cup
► (d) Bowman's cup
16. Difference between glomerular filtrate and plasma is of
(a) Proteins
(b) Potassium
(c) First is white where as later is yellow
(d) First is yellow whereas later is white
► (a) Proteins
17. Glucose is taken back from glomerular filtrate through:
(a) Active transport
(b) Passive transport
(c) Osmosis
(d) Diffusion
► (a) Active transport
18. A patient suffering from cholera is given saline drip because [1996, 2000]
(a) Cl– ions are important component of blood plasma
(b) Na+ ions help to retain water in the body
(c) Na+ ions are important in transport of substances across membrane
(d) Cl– ions help in the formation of HCl in stomach for digestion
► (b) Na+ ions help to retain water in the body
► (b) Na+ ions help to retain water in the body
19. Brush border is characteristic of
(a) Neck of nephron
(b) Collecting tube
(c) Proximal convoluted tuble
(d) All the above
► (c) Proximal convoluted tuble
20. Pyramids in kidney of frog are
(a) 2
(b) 5
(c) 10
(d) absent
► (d) absent
21. Brush border is characteristic of:
(a) Neck of nephron
(b) Collecting tube
(c) Proximal convoluted tubule
(d) All the above
► (c) Proximal convoluted tubule
22. Mesonephric kidney develops from
(a) Anterior part of nephrotome
(b) Middle part of nephrotome
(c) Posterior part of nephrotome
(d) None of the above
► (b) Middle part of nephrotome
21. Cortex and medulla region in frog kidney are
(a) Less distinct
(b) More distinct
(c) Absent
(d) None of the above
► (c) Absent
22. Which is not a basic renal function?
(a) Perfusion
(b) Secretion
(c) Reabsorption
(d) Filtration
► (a) Perfusion
23. Sulphates phosphates and carbonates of calcium are excreted by
(a) Kidney
(b) Liver
(c) Spleen
(d) Colon
► (d) Colon
24. Excretory product of mammals is
(a) Salts
(b) Glucose
(c) Urea
(d) Ammonia
► (c) Urea
25. When a fresh-water protozoan possessing a contractile vacuole, is placed in a glass containing marine water, the vacuole will:
(a) increase in number
(b) disappear
(c) increase in size
(d) decrease in size
► (b) disappear
26. Uric acid is nitrogenous waste in:
(a) Mammals and molluscs
(b) Birds and lizards
(c) Frog and cartilaginous fishes
(d) Insects and bony fishes
► (b) Birds and lizards
27. In the renal tubules the permeability of the distal convoluted tubule and collecting duct to water is controlled by:
(a) Vasopressin
(b) Aldosterone
(c) Growth hormone
(d) Renin
► (a) Vasopressin
28. The filtrate from the glomerulus contains
(a) Urea and uric acid
(b) Urea, uric acid and ammonia
(c) Urea, uric acid, ammonia and water
(d) Urea, uric acid, glucose and water
► (d) Urea, uric acid, glucose and water
29. Inner wall of urinary bladder is composed of
(a) Unstriped muscles
(b) Striped muscles
(c) Stratified epithelium
(d) Transitional epithilium
► (d) Transitional epithilium
30. The two kidneys lie in man
(a) At the level of ovaries
(b) At the same level
(c) Left kidney at a higher level than the right one
(d) Right kidney at a higher level than the left one
► (c) Left kidney at a higher level than the right one
31. In cortex area of kidney all structure are found except:
(a) Bowman capsule
(b) D.C.T.
(c) Majority of collecting duct
(d) Malphighian body
► (c) Majority of collecting duct
32. A terrestrial animal must be able to:
(a) excrete large amounts of water in urine
(b) conserve water
(c) actively pump salts out through the skin
(d) excrete large amounts of salts in urine
► (b) conserve water
33. Uriniferous tubules occur in
(a) Stomach
(b) Testes
(c) Ovary
(d) Kidney
► (d) Kidney
34. A person is undergoing prolonged fasting. His urine will be found to contain abnormal quantities of:
(a) fats
(b) amino acids
(c) glucose
(d) ketones
► (d) ketones
36. Formation of concentrated (hyperosmotic) urine in vertebrates generally depends on
(a) length of the proximal convoluted tubule
(b) length of Henle's loop
(c) area of Bowman's capsule epithelium
(d) capillary network forming glomerulus
► (b) length of Henle's loop
37. A notch present on the medial side of kidney is known as
(a) Ureter
(b) Pelvis
(c) Hilus
(d) Pyramid
► (c) Hilus
38. Proximal and distal convoluted tubules are parts of:
(a) Seminiferous tubules
(b) Nephron
(c) Oviduct
(d) Vas deferens
► (b) Nephron