CBSE Questions for Class 11 Medical Biology Excretory Products And Their Elimination Quiz 4 - MCQExams.com

Which of the following are osmoconformers?
  • Hag fish
  • Sharks
  • Rays
  • All of the above
Ureters act as Wolffian or urinogenital duct in 
  • Both male and female frog
  • Male frog
  • Human male
  • Human female
Blood fraction remaining unchanged after circulation through kidney is
  • Urea and uric acid
  • Urea and proteins
  • Urea and glucose
  • Glucose and proteins
Which one is the most poisonous excretory substance?
  • Uric acid
  • Urea
  • Ammonia
  • Hippuric acid
Which one is the correct option for the structure and function of a nephron?
  • Glomerulus- filtration
  • Proximal convoluted tubule- reabsorption
  • Both A and B
  • Distal convoluted tubule- filtration
Urine of a human being suffering from diabetes inspidus is
  • Tasteless and thick
  • Tasteless and watery
  • Sweet and thick
  • Sweet and watery
Maintenance of steady state by different systems in an organism can be referred to as _____.
  • Homeostasis
  • Peristalsis
  • Necrosis
  • Amoebiasis
In kidney glomerulus is involved in 
  • Reabsorption of salts
  • Urine collection
  • Urine formation by blood filtration
  • All of the above
The blood vessel taking blood into Bowman's capsule is
  • Afferent arteriole
  • Efferent arteriole
  • Renal vein
  • Renal portal vein
Total filtrate formed in 24 hours in human kidney is
  • 1.8 litres
  • 8.0 litres
  • 18 litres
  • 180 litres
Characteristic smell of urine is due to ____.
  • Urea
  • Uric acid
  • Urinod substance
  • Nitrogen oxide
One is found in blood not in Nephric filtrate
  • Urea
  • Glucose
  • Amino acids
  • Globulin
Uriniferous tubules occur in
  • Stomach
  • Testes
  • Ovary
  • Kidney
Parietal layer of Bowman's capsule is lined by
  • Ciliated cuboidal epithelium
  • Squamous epithelium
  • Non-ciliated cuboidal epithelium
  • Non-ciliated columnar epithelium
The mechanism of urine formation in nephron involves
  • Ultrafiltration
  • Reproduction
  • Diffusion
  • Osmosis
Dense pelage is characteristic of animal inhabiting (heavy hairy body)
  • Cold Climate
  • Warm climate
  • Tropical climate
  • Aquatic
Which one of the following does not filter out from blood to Bowman's capsule in glomerular ultrafiltration?
  • Amino acids
  • Polypeptide
  • Glucose
  • Fatty acids
Which one of the following is the simplest excretory organ?
  • Alveolus
  • Flame cell
  • Nephridium
  • Kidney
Excretory material are formed in
  • Kidney
  • Rectum
  • Liver
  • Every cell of the body
Glucose is taken back from glomerular filtrate through
  • Active transport
  • Passive transport
  • Osmosis
  • Diffusion
Which one of the following statements in regard to the excretion by the human kidney's is correct?
  • Ascending limb of loop of Henle is impermeable to electrolytes
  • Descending limb of loop of Henle is impermeable to water
  • Distal convoluted tubule is incapable of reabsorbing HCO $$_3^-$$
  • Nearly 99 percent of the glomerular filtrate is reabsorbed by the renal tubules
Which of the following is concerned with the formation of urea in rabbit?
  • Blood
  • Kidney
  • Spleen
  • Liver
The excretory organs in an earthworm are 
  • Ureters
  • Stomata
  • Nephrons
  • Nephridia
Human urine as compared to human blood is normally
  • Hypotonic
  • Hypertonic
  • Isotonic
  • All of the above
In the kidney, the formation of urine involves the following processes
  • Glomerular filtration, reabsorption and tubular secretion
  • Reabsorption and filtration
  • Secretion and absorption
  • None of the above
Glomerular filtrate is
  • Blood minus blood corpuscles and plasma protein
  • Blood minus corpuscles
  • Mixture of water, ammonia and corpuscles
  • Urine
Marine telecosts, undergoing putrefaction, emit sharp characteristic foul odour, which is due to the production of 
  • Trimethylamine
  • Hydrogen sulphide
  • Ammonia
  • Lactic acid
Match the following.
        List 1                                                                            List 2
A.     Loop of Henle                                                    Carries blood the kidney
B.     Rental artery                                                      Area where a considerable              amount of reabsorption takes place                                                                                                 
C.    Proximal convoluted tubule                              Main area of secretion
D.    Glomerulus                                                          Filtration of blood
E.    Distal convoluted tubule                                    Plays a role in concentration          of urine    
  • A- 5, B- 1, C- 2, D- 4, E- 3
  • A- 5, B- 1, C- 2, D- 3, E- 4
  • A- 1, B- 5, C- 3, D- 4, E- 2
  • A- 2, B- 1, C- 3, D- 5, D- 4
Fresh water bony fishes maintain water balance by
  • Excreting a hypotonic urine
  • Excreting salt across their gills
  • Drinking small amount of water
  • Excreting wastes in the form of uric acid
Glomerular filtrate contains
  • Blood without blood cells and proteins
  • Plasma without sugar
  • Blood with proteins but without cells
  • Blood without urea
The most abundant, harmful and universal waste product of metabolism is
  • CO$$_{ 2 }$$
  • Uric acid
  • H$$_{ 2 }$$O
  • C$$_{ 2 }{ H }_{ 5 }OH$$
The cavity of Bowman's capsule contain
  • Urea, glycogen and water
  • Urea and water
  • Blood plasma except blood protein
  • Concentrated blood
What causes glomerular filtration?
  • High pressure
  • Osmosis
  • Diapedesis
  • Dialysis
Functional unit in a kidney is

  • Nephron
  • Nephritis
  • Neuron
  • Loop of Henle
Which substance is in higher concentration in blood than in glomerular filtrate?
  • Urea
  • Plasma proteins
  • Water
  • Glucose
Part not belonging to uriniferous tubule is
  • Glomerulus
  • Henles loop
  • Distal convoluted tubule
  • Connecting tubule
Uriniferous tubules of a kidney are concerned with formation of
  • Glucose
  • Amino acids
  • Hormones
  • Urine
Animals release water into the atmosphere by _________ and _________.
  • Respiration, excretion
  • Digestion, sweating
  • Excretion, transpiration
  • Metabolism, breathing
The functional unit of the mammalian kidney is the _____.
  • Nephron
  •  Neuron 
  • Kupffer cells  
  • Hepatocytes  
Double-walled cup shaped structure present in nephron is known as _______.
  • Glomerulus
  • Proximal convoluted tubule
  • Bowman's capsule
  • Cortex
The gall bladder is involved in
  • Synthesizing bile
  • Storing and secreting bile
  • Degrading bile
  • Producing insulin
Which of the following organ is not related to excretion?
  • Lungs
  • Pancreas
  • Liver
  • Skin
A nephridium of an earthworm drains materials directly from the
  • Gut
  • Coelom
  • Lymph
  • Blood
A Malpighian tubule empties urine into the
  • Gut
  • Coelom
  • Lymph
  • Ureters
Kidneys are not only organs of excretion. Their work is supplemented by
  • Liver
  • Heart
  • Large intestine
  • Skin
The conversion of protein waste, the ammonia into urea occurs mainly in
  • Kidney
  • Lungs
  • Liver
  • Intestine
In sponges, which structure is used for excretion?
  • Contractile vocuole
  • Flame cells
  • Nephridia
  • Osculum
Long loops of Henle correlate with
  • More concentrated urine
  • More dilute urine
  • Urine hypotonic to the blood
  • Urine isotonic to the blood
In insects, Malpighian tubules drain materials directly from the
  • Gut
  • Haemocoel
  • Spider
  • Jelly fish
A marine bony fish continuously
  • Acquire water and get rid of salt
  • Get rid of both water and salt
  • Get rid of water and acquire salt
  • Acquire both water and salt
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