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Excretion - 3

Description: Excretion - 3
Number of Questions: 20
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Tags: Excretion - 3 Excretion in animals & Plants
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Vitamin excreted by urine in higher vertebrates is

  1. A

  2. D

  3. K

  4. C


Correct Option: D

In public urinals, the urine gives a pungent smell due to

  1. conversion of both urea and uric acid into ammonia

  2. conversion of uric acid into ammonia by Ornithine cycle

  3. conversion of urea into ammonia by bacteria

  4. none of the above


Correct Option: C

Elevation of BP would most likely to be caused by

  1. rennin

  2. renin

  3. urea

  4. ketone bodies


Correct Option: B

Which of the following enzymes helps in the production of urea?

  1. Uricase

  2. Urease

  3. Arginase

  4. None of these


Correct Option: C

Micturition is possible only if the muscles of the urinary bladder contract and the

  1. urethra contracts

  2. urethra relaxes

  3. ureter contracts

  4. None of these


Correct Option: B
Explanation:

Micturition is possible only if the muscles of urinary bladder contract and the urethra relaxes.

In the kidney, glucose is mainly absorbed in the

  1. Bowman's capsule

  2. loop of Henle

  3. proximal convoluted tubule

  4. distal convoluted tubule


Correct Option: C

The kidneys of man are

  1. opisthonephros

  2. pronephros

  3. mesonephros

  4. metanephros


Correct Option: D

Which of the following is never the function of the kidney?

  1. pH regulation

  2. Mineral level regulation

  3. Erythropoiesis

  4. Urea formation


Correct Option: C

The glomeruli are limited in man's kidney to the

  1. cortex

  2. medulla

  3. pyramidal tissue

  4. all over the kidney


Correct Option: A

The blood leaves the glomerulus through

  1. afferent arteriole

  2. efferent arteriole

  3. renal veins

  4. renal portal veins


Correct Option: B

In man which blood vessel takes away blood from the kidney?

  1. Afferent arteriole

  2. Efferent arteriole

  3. Renal vein

  4. Renal portal vein


Correct Option: C

The Bowman's capsule is

  1. a part of uriniferous tubule and is the site of filtration of various blood constituents during the formation of urine

  2. a part of uriniferous tubule and is the site of reabsorption of water and glucose

  3. present in the liver and is the site of secretion of the bile juice

  4. associated with liver and is the site of the storage of the bile juice


Correct Option: A

The Malpighian corpuscle lies in the

  1. medulla

  2. liver

  3. cortex

  4. pelvis


Correct Option: C

Water is not reabsorbed in

  1. proximal convoluted tubule

  2. descending limb of loop of Henle

  3. ascending limb of loop of Henle

  4. distal convoluted tubule


Correct Option: C

In cockroach, the excretory product is

  1. ammonia

  2. uric acid

  3. urea

  4. both 1 and 3


Correct Option: B

In which organ of the body is theinsoluble calcium phosphate eliminated?

  1. Liver

  2. Kidneys

  3. Lungs

  4. Large intestine


Correct Option: D

In marine telecost fish Na+ and CI- ions are excreted by

  1. gills

  2. kidneys

  3. neuromast organs

  4. scroll valve


Correct Option: A

The undigested food in Hydra is expelled from

  1. cloaca

  2. anus

  3. mouth

  4. general body surface


Correct Option: C

Separation of amino acid into amino and carboxyl group is known as

  1. deamination

  2. excretion

  3. amination

  4. egestion


Correct Option: A

There is no sugar in urine. The blood entering the kidney has more sugar than leaving the kidney because

  1. sugar is used by kidney cells in metabolism

  2. sugar is absorbed by bladder

  3. sugar is absorbed by proximal convoluted tubule

  4. sugar is absorbed in loop of Henle


Correct Option: A
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