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Biology (Excretory System)

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What are the main excretory organs of vertebrates including mammals?

  1. Nephridia

  2. Kidneys

  3. Neurons

  4. Lungs


Correct Option: B
Explanation:

2

Which organ synthesises urea?

  1. Heart

  2. Kidney

  3. Liver

  4. Lungs


Correct Option: C
Explanation:

3

Name the excretory organs in insects.

  1. Malphigian tubules

  2. Flame cells

  3. Nephridia

  4. Green glands


Correct Option: A
Explanation:

1

Which of the following are the examples of ureotelic animals?

  1. Annelids

  2. Hydra, salamanders

  3. Lizards, birds

  4. Man, Cartilaginous fish


Correct Option: D
Explanation:

4

Out of the following, which organ is not concerned with excretion?

  1. Liver

  2. Skin

  3. Neuron

  4. Nephron


Correct Option: C
Explanation:

3

In which part of nephron is urine concentrated?

  1. Collecting tubule

  2. Proximal convoluted tubule

  3. Distal convoluted tubule

  4. Renal corpuscle


Correct Option: A
Explanation:

1

What is the medical term for kidney stones?

  1. Uremia

  2. Renal calculi

  3. Renal pyramid

  4. Ketosis


Correct Option: B
Explanation:

2

Urine is yellow in colour due to the presence of a pigment called

  1. haematochrome

  2. phytochrome

  3. urochrome

  4. lactochrome


Correct Option: C
Explanation:

3

A nephron consists of 'Glomerulus' which is a tuft of ____________ enclosed within the cup shaped Bowman's capsule.

  1. nerves

  2. capillaries

  3. arteries

  4. veins


Correct Option: B
Explanation:

2

Which is the most toxic excretory product in animals?

  1. Urea

  2. Uric acid

  3. Ammonia

  4. Carbon dioxide


Correct Option: C
Explanation:

3

The disease caused due to presence of blood in urine is called

  1. Nephritis

  2. Proteinuria

  3. Haematuria

  4. Ureteritis


Correct Option: C
Explanation:

3

Name the branch of medicine dealing with the study of function and diseases of kidney.

  1. Urology

  2. Nephrology

  3. Radiology

  4. Pathology


Correct Option: B
Explanation:

2

Name the method of removing toxic substances from the blood when the kidneys are unable to do so.

  1. Phenylketonuria

  2. Dialysis

  3. DLC

  4. Electroporation


Correct Option: B
Explanation:

2

How many litres of urine is secreted per day by a normal adult human?

  1. About 1-2 litres per day

  2. About 4 litres per day

  3. More than 5 litres per day

  4. Less than 0.5 litres per day


Correct Option: A
Explanation:

1

The involuntary passing of urine, mostly at night, commonly referred to as bedwetting is known as

  1. uretheritis

  2. enuresis

  3. nephritis

  4. uremia


Correct Option: B
Explanation:

2

In a nephron, _________________ is responsible for reabsorption and secretion.

  1. renal cortex

  2. renal pyramid

  3. renal pelvis

  4. renal tubule


Correct Option: D
Explanation:

4

Name the hormone that increases reabsorption of ions and water in the kidney.

  1. Thyroxin

  2. Calcitonin

  3. Aldosterone

  4. Adrenaline


Correct Option: C
Explanation:

3

What is the name of proteolytic enzyme secreted by the kidneys that catalyzes the formation of angiotensin and thus affects blood pressure?

  1. Renin

  2. Trypsin

  3. Pepsin

  4. Lipase


Correct Option: A
Explanation:

1

What are the animals who excrete uric acid called?

  1. Ammoniotelic animals

  2. Uricotelic animals

  3. Ureotelic animals

  4. None of the above


Correct Option: B
Explanation:

2

Older people will have ___________ Glomerular filteration rate (GFR) levels. The GFR test measures how well your kidneys are filtering a waste called 'creatinine'.

  1. higher

  2. lower

  3. abnormal

  4. very high


Correct Option: B
Explanation:

2

Which one of the following is not the accessory excretory organ in vertebrates?

  1. Skin

  2. Liver

  3. Lungs

  4. Heart


Correct Option: D
Explanation:

4

'Diuretics' are the substances which cause

  1. decreased formation of urine

  2. dehydration

  3. increased formation of urine

  4. diarrhoea


Correct Option: C
Explanation:

3

What is the name of blood vessel that supplies blood to the kidneys?

  1. Renal artery

  2. Renal vein

  3. Aorta

  4. Inferior vena cava


Correct Option: A
Explanation:

1

A depression or pit where structures such as blood vessels and nerves enter the kidney is known as

  1. renal pyramid

  2. renal calyx

  3. renal pelvis

  4. renal hilum


Correct Option: D
Explanation:

4

Which limb of Henle's loop is least permeable to water?

  1. Ascending limb

  2. Descending limb

  3. Both the limbs are equally permeable

  4. None of the two limbs


Correct Option: A
Explanation:

1

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