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Excretory Products and their Elimination Class 11 MCQs Questions with Answers
Question 1.
A notch present on the medial side of kidney is known as
(a) Ureter
(b) Pelvis
(c) Hilus
(d) Pyramid
Answer
Answer: (c) Hilus
Question 2.
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
Answer
Answer: (d) ketones
Question 3.
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
Answer
Answer: (b) conserve water
Question 4.
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
Answer
Answer: (c) Left kidney at a higher level than the right one
Question 5.
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
Answer
Answer: (d) Urea, uric acid, glucose and water
Question 6.
Uric acid is nitrogenous waste in:
(a) Mammals and molluscs
(b) Birds and lizards
(c) Frog and cartilaginous fishes
(d) Insects and bony fishes
Answer
Answer: (b) Birds and lizards
Question 7.
Excretory product of mammals is
(a) Salts
(b) Glucose
(c) Urea
(d) Ammonia
Answer
Answer: (c) Urea
Question 8.
Which is not a basic renal function?
(a) Perfusion
(b) Secretion
(c) Reabsorption
(d) Filtration
Answer
Answer: (a) Perfusion
Question 9.
Mesonephric kidney develops from
(a) Anterior part of nephrotome
(b) Middle part of nephrotome
(c) Posterior part of nephrotome
(d) None of the above
Answer
Answer: (b) Middle part of nephrotome
Question 10.
Pyramids in kidney of frog are
(a) 2
(b) 5
(c) 10
(d) absent
Answer
Answer: (d) absent
Question 11.
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
Answer
Answer: (b) Na+ ions help to retain water in the body
Question 12.
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
Answer
Answer: (a) Proteins
Question 13.
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
Answer: (c) 20 mm Hg
Question 14.
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
Answer
Answer: (a) The urine will be more dilute
Question 15.
Malpighian corpuscles are present in
(a) Cortex
(b) Medulla
(c) Germinal cells
(d) None of the above
Answer
Answer: (a) Cortex
Question 16.
Kidney is
(a) Ectodermal
(b) Mesodermal
(c) Endodermal
(d) None of the above
Answer
Answer: (b) Mesodermal
Question 17.
Nephron is made up of
(a) Malpighian body
(b) Coiled tuble
(c) Both of the above
(d) None of the above
Answer
Answer: (c) Both of the above
Question 18.
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
Answer
Answer: (d) in the liver, but eliminated mostly through kidneys
Question 19.
Which pair is correct-
(a) Sweat = temperature regulation
(b) Saliva = sense of food taste
(c) Sebum = sexual attraction
(d) Humerus = Hind leg
Answer
Answer: (a) Sweat = temperature regulation
Question 20.
Proximal and distal convoluted tubules are parts of:
(a) Seminiferous tubules
(b) Nephron
(c) Oviduct
(d) Vas deferens
Answer
Answer: (b) Nephron
Question 21.
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
Answer
Answer: (b) length of Henle’s loop
Question 22.
Uriniferous tubules occur in
(a) Stomach
(b) Testes
(c) Ovary
(d) Kidney
Answer
Answer: (d) Kidney
Question 23.
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
Answer
Answer: (c) Majority of collecting duct
Question 24.
Inner wall of urinary bladder is composed of
(a) Unstriped muscles
(b) Striped muscles
(c) Stratified epithelium
(d) Transitional epithilium
Answer
Answer: (d) Transitional epithilium
Question 25.
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
Answer
Answer: (a) Vasopressin
Question 26.
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
Answer
Answer: (b) disappear
Question 27.
Sulphates phosphates and carbonates of calcium are excreted by
(a) Kidney
(b) Liver
(c) Spleen
(d) Colon
Answer
Answer: (d) Colon
Question 28.
Cortex and medulla region in frog kidney are
(a) Less distinct
(b) More distinct
(c) Absent
(d) None of the above
Answer
Answer: (c) Absent
Question 29.
Brush border is characteristic of:
(a) Neck of nephron
(b) Collecting tube
(c) Proximal convoluted tubule
(d) All the above
Answer
Answer: (c) Proximal convoluted tubule
Question 30.
Brush border is characteristic of
(a) Neck of nephron
(b) Collecting tube
(c) Proximal convoluted tuble
(d) All the above
Answer
Answer: (c) Proximal convoluted tuble
Question 31.
Glucose is taken back from glomerular filtrate through:
(a) Active transport
(b) Passive transport
(c) Osmosis
(d) Diffusion
Answer
Answer: (a) Active transport
Question 32.
Podocyte are present in
(a) Afferent arteriole
(b) Efferent arteriole
(c) Peritubular network
(d) Bowman’s cup
Answer
Answer: (d) Bowman’s cup
Question 33.
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
Answer
Answer: (b) Removal of useless substances and susbtances present in excess
Question 34.
The basic functional unit of the human kidney is:
(a) Nephron
(b) Nephridia
(c) Pyramid
(d) Henle’s loop
Answer
Answer: (a) Nephron
Question 35.
Ammonia is the main nitrogenous excretory material in
(a) Amphibians
(b) Aves
(c) Tadpoles
(d) Reptiles
Answer
Answer: (c) Tadpoles
Question 36.
Excretory products of mammalian embryo are eliminated by-
(a) Placenta
(b) Amniotic fluid
(c) Allantois
(d) Ureters
Answer
Answer: (a) Placenta
Question 37.
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.
Answer
Answer: (c) Kidney covered by Peritoneum on ventral side
Question 38.
Excretory material are formed in
(a) Kidney
(b) Rectum
(c) Liver
(d) Every body cell
Answer
Answer: (d) Every body cell
Question 39.
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
Answer
Answer: (c) Larger than that of efferent
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