Excretory System Objective Type Questions & Answers

(21) Conversion of excess of amino acids into urea is done in

[A] Lungs

[B] Large intestine

[C] Liver

[D] Cloaca

Answer: Liver

(22) Man is

[A] Ammonotelic

[B] Ureotelic

[C] Uricotelic

[D] None of the above

Answer: Ureotelic

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(23) Malpighian body is present in

[A] Skin

[B] Kidney

[C] Testes

[D] Ovaries

Answer: Kidney

(24) The retroperitoneal kidney is

[A] Kidney of fish

[B] Kidney covered by peritoneum on ventral side

[C] Kidney covered by peritoneum on dorsal side

[D] Kidney uncovered by peritoneum on either side

Answer: Kidney covered by peritoneum on ventral side

(25) The main excretory organs in man are

[A] Kidneys

[B] Nephridia

[C] Trachea

[D] Lungs

Answer: Kidneys

(26) Kidneys are not the only organs of excretion, their work is supplemented by

[A] Liver

[B] Skin

[C] Heart

[D] Large intestine

Answer: Skin

(27) The position of kidneys is

[A] Inter-peritoneal

[B] Retroperitoneal

[C] Intraperitoneal

[D] Neon of these

Answer: Retroperitoneal

(28) The bunch of capillaries present in the Bowman’s capsule is called

[A] Paccinian corpuscle

[B] Bowman’s capsule

[C] Glomerulus

[D] Malpighian capsule

Answer: Glomerulus

(29) Diameter of the renal afferent vessel 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: Larger than that of efferent

(30) The afferent and efferent vessels are

[A] Arterial in nature

[B] Venous in nature

[C] One is arterial and the other is venous

[D] None of the above

Answer: Arterial in nature

31 Deamination is the first step in urea formation. It means the

[A] Reduction of ammonia

[B] Oxidation of ammonia

[C] Addition of amino group to a nonamino organic molecule

[D] Removal of amino group from an amino acid

Answer: Removal of amino group from an amino acid

32 The glomerular afferent arteriole has a pressure of

[A] + 120 mm Hg

[B] -120 mm Hg

[C] + 95 mm Hg

[D] +75 mm Hg

Answer: +75 mm Hg

33 Glycosuria is the term used for

[A] Loss of glucose in the urine

[B] Loss of blood in the urine

[C] Loss of salts in the urine

[D] None of these

Answer: Loss of glucose in the urine

34 Uraemia is an excretory disorder in which

[A] The tubules of kidney reabsorb urea in large amount

[B] Concentration of urea goes high in the blood because the tubules are not able to remove it from the blood

[C] Urea is produced in excess in the body

[D] None of these

Answer: Concentration of urea goes high in the blood because the tubules are not able to remove it from the blood

35 The elimination of insoluble calcium phosphate takes place by

[A] Liver

[B] Kidney

[C] Large intestine

[D] Skin

Answer: Large intestine

36 Excretion of bile pigments in the urine indicates

[A] Anaemia

[B] Diabetes

[C] Rickets

[D] Jaundice

Answer: Jaundice

37 Which of the following enzyme is produced in the kidneys

[A] Rennin

[B] Renin

[C] Uricase

[D] Arginase

Answer: Renin

38 The collecting ducts in the kidney converge to from

[A] Pyramid

[B] Calyx

[C] Pelvis

[D] Columns of Bertin

Answer: Pyramid

39 In adult Frog, the kidney is

[A] Pronephros

[B] Opisthonephros

[C] Mesonephros

[D] Metanephros

Answer: Mesonephros

40 In human beings, gout is caused by

[A] Deficiency of iodine

[B] Excessive secretion of thyroid

[C] Excessive liberation of uric acid

[D] Deposition of uric acid

Answer: Deposition of uric acid

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