The yellow colour of urine is due to the presence of

Important Questions on Excretory Products and Their Elimination

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IMPORTANT

MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 19 - Excretory Products and Their Elimination>MCQS CORNER>Q 85

Which one of the following is correct for a normal human?

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 19 - Excretory Products and Their Elimination>MCQS CORNER>Q 86

Glycosuria is the condition where a man

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 19 - Excretory Products and Their Elimination>MCQS CORNER>Q 87

A person is undergoing prolonged fasting. His urine would contain abnormal quantities of

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 19 - Excretory Products and Their Elimination>MCQS CORNER>Q 88

A person who is not taking food or beverages will have.........in urine.

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 19 - Excretory Products and Their Elimination>MCQS CORNER>Q 89

Read the given statements regarding human excretory system and select the correct ones.
(i) Presence of glucose in urine is known as uremia.
(ii) Distal convoluted tubule (DCT) selectively secretes hydrogen ions, ammonia and potassium ions into the filtrate.
(iii) Macula densa is formed by cellular modifications in the distal convoluted tubule and the afferent arteriole at their contact location.
(iv) Atrial natriuretic factor (ANF) can cause vasoconstriction when blood flow is low to the atria of the heart.

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 19 - Excretory Products and Their Elimination>MCQS CORNER>Q 90

Match Column I with II and select the correct option from the codes given below.

	Column I		Column II
$\left(\mathrm{a}\right)$	Lungs	$\left(\mathrm{i}\right)$	Lactic acid
$\left(\mathrm{b}\right)$	Liver	$\left(\mathrm{i}\mathrm{i}\right)$	Hypertonic urine
$\left(\mathrm{c}\right)$	Micturition	$\left(\mathrm{i}\mathrm{i}\mathrm{i}\right)$	Counter-current system
$\left(\mathrm{d}\right)$	Sweat	$\left(\mathrm{i}\mathrm{v}\right)$	${\mathrm{C}\mathrm{O}}_2$
$\left(\mathrm{e}\right)$	Vasa recta	$\left(\mathrm{v}\right)$	Urinary bladder
$\left(\mathrm{f}\right)$	Sebum	$\left(\mathrm{v}\mathrm{i}\right)$	Glucose
$\left(\mathrm{g}\right)$	ADH	$\left(\mathrm{v}\mathrm{i}\mathrm{i}\right)$	Bilirubin
$\left(\mathrm{h}\right)$	Tubular reabsorption	$\left(\mathrm{v}\mathrm{i}\mathrm{i}\mathrm{i}\right)$	Sterols

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 19 - Excretory Products and Their Elimination>MCQS CORNER>Q 91

Consider the following four statements $(\mathrm{i}-\mathrm{i}\mathrm{v})$ and select the option that correctly identifies the true $\left(\mathrm{T}\right)$ and false
$\left(\mathrm{F}\right)$ ones.
$\left(\mathrm{i}\right)$ Atrial natriuretic factor can cause vasodilation (dilation of blood vessels) and thereby decreases the blood pressure.
$\left(\mathrm{i}\mathrm{i}\right)$ On an average, $60-70\mathrm{ }\mathrm{g}\mathrm{m}$ of urea is excreted out per day.
($\mathrm{i}\mathrm{i}\mathrm{i})$ Sebaceous glands eliminate certain substances like $\mathrm{N}\mathrm{a}\mathrm{C}\mathrm{I}$ , urea and lactic acid through sebum.
($\mathrm{i}\mathrm{v})$ PCT is lined by simple cuboidal brush border epithelium which increases the surface area for reabsorption.

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 19 - Excretory Products and Their Elimination>MCQS CORNER>Q 92

Which of the following statements are correct?
(i) Glucose has high threshold value.
(ii) Urine is concentrated in Henle's loop.
(iii) Haemodialyser removes urea, uric acid, glucose and plasma proteins.
(iv) In glomerulus, urea, uric acid, water, glucose and plasma proteins are filtered out.