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NEET • BIOLOGY • EXCRETORY PRODUCTS AND THEIR ELIMINATION

Excretory products and their elimination practice · Easy

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Showing 91-105 of 105 questions

91 Easy

91 of 105

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Micturition reflex is a neural mechanism to

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Correct option: C

Release urine

Option C is correct because micturition reflex is the neural mechanism that leads to the release of urine from the urinary bladder.

92 Easy

92 of 105

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Choose the correct ones.

I. Efferent arteriole carries the blood away from the glomerulus toward the renal artery

II. Afferent arteriole carries the blood to the renal vein

III. Podocytes form minute spaces (slip pores) for the filtration of blood into the Bowman's capsule

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Correct option: C

Only III

Option C (Only III) is correct because only statement III accurately describes the function of podocytes in the filtration process.

93 Easy

93 of 105

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Mammals excrete

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Correct option: A

Urea

Option A (Urea) is correct because mammals are primarily ureotelic, meaning they convert ammonia into urea in the liver for excretion by the kidneys.

94 Easy

94 of 105

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The yellow colour of normal urine is due to

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Correct option: C

Urochrome

Option C is correct because the yellow color of normal urine is due to the presence of urochrome, a pigment produced from the breakdown of hemoglobin.

95 Easy

95 of 105

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Main function of glomerulus is

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Correct option: A

Filtration of urine

Option A is correct because the main function of the glomerulus is to filter blood, producing the glomerular filtrate.

96 Easy

96 of 105

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Layers between the glomerular and Bowman’s capsule through which the filtration takes place are:  I. endothelium of the glomerular blood vessel,  II. middle lamella,  III. basement membrane between the endothelium of glomerular blood vessels and epithelium of the Bowman’s capsule, IV. epithelium of the Bowman’s capsule

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Correct option: C

I, III and IV

Option C is correct because the filtration barrier consists of the endothelium of the glomerular blood vessel, the basement membrane, and the epithelium of Bowman's capsule.

97 Easy

97 of 105

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Name the condition when the concentration of ketone body increases in urine

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Correct option: B

Ketonuria

Option B is correct because ketonuria is the condition where ketone bodies are present in the urine.

98 Easy

98 of 105

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Structural and functional unit of the kidney is

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Correct option: C

Nephron

Option C (Nephron) is correct because the nephron is the structural and functional unit of the kidney.

99 Easy

99 of 105

Remembering +4 | -1

A bird excretes nitrogenous waste materials in the form of

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Correct option: A

Uric acid

Option A is correct because birds excrete nitrogenous waste primarily as uric acid, which requires less water for excretion.

100 Easy

100 of 105

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The excretory material of bony fish is

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Correct option: C

Ammonia

Option C (Ammonia) is correct because bony fish primarily excrete nitrogenous waste in the form of ammonia, which is highly soluble in water.

101 Easy

101 of 105

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Which is the powerful vasoconstrictor

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Correct option: D

Angiotensin II

Option D is correct because Angiotensin II is a potent vasoconstrictor, increasing blood pressure.

102 Easy

102 of 105

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The principle nitrogenous excretory compound in humans is synthesized

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Correct option: D

In the liver, but eliminated mostly through kidneys

Option D (In the liver, but eliminated mostly through kidneys) is correct because urea, the main nitrogenous waste in humans, is synthesized in the liver and then excreted by the kidneys.

103 Easy

103 of 105

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A man takes large amount of proteins. He is likely to excrete a greater amount of

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Correct option: A

Urea

Option A (Urea) is correct because excess protein intake leads to increased amino acid metabolism, resulting in more nitrogenous waste, which is converted to urea.

104 Easy

104 of 105

Understanding +4 | -1

Which of the following leads to increase in blood pressure and glomerular filtration rate?

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Correct option: A

Reabsorption of

N{a^ + }

and water from the distal parts of the renal tubule caused by aldosterone.

Option A (Reabsorption of

N{a^ + }

and water from the distal parts of the renal tubule caused by aldosterone) is correct because aldosterone promotes sodium and water reabsorption, increasing blood volume and pressure, which in turn increases GFR.

105 Easy

105 of 105

Understanding +4 | -1

I. Excess loss of water from body II. Hypothalamus III. Osmoreceptors IV. ADH V. Neurohypophysis VI. Water reabsorption from  DCT and CT VII. Prevention of diuresis Arrange the given processes in correct sequence for regulation in kidney

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Correct option: C

I→III→II→V→IV→VI→VII

Option A (I→II→III→IV→V→VI→VII) is incorrect. Option C (I→III→II→V→IV→VI→VII) is correct because it represents the correct sequence of events in kidney regulation: water loss, osmoreceptor activation, hypothalamus stimulation, ADH release from neurohypophysis, ADH action, water reabsorption, and prevention of diuresis.

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