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NEET • BIOLOGY • EXCRETORY PRODUCTS AND THEIR ELIMINATION
Excretory products and their elimination practice · Mixed difficulty
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91
Medium
91 of 269
Remembering
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What is meant by glycosuria
View answer and explanation
Correct option: A
Presence of glucose in urine
Option A (Presence of glucose in urine) is correct because glycosuria specifically refers to the presence of glucose in the urine.
92
Medium
92 of 269
Analyzing
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A person was advised to do urine tests and a blood tests for glucose. Glucose was detected in his urine. He
was not taking any medications. Which of the following values will correspond to the amount of glucose in
the blood of a person?
was not taking any medications. Which of the following values will correspond to the amount of glucose in
the blood of a person?
View answer and explanation
Correct option: A
200 mg of glucose per 100 ml of blood
Option A is correct. A glucose level of 200 mg/100 ml in blood, along with glucose in urine, strongly suggests diabetes mellitus.
93
Medium
93 of 269
Understanding
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Out of the four parts given below, which parts play significant role in forming concentrated urine in human? I. Loop of Henle , II. Glomerulus, III. Bowman’s capsule, IV. Vasa recta. The correct option is
View answer and explanation
Correct option: D
I and IV
Option D (I and IV) is correct because the Loop of Henle establishes the concentration gradient in the medulla, and the Vasa recta maintains this gradient, both of which are crucial for concentrating urine.
94
Medium
94 of 269
Analyzing
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A person who is on a long hunger strike and is surviving only on water, will have?
View answer and explanation
Correct option: A
More sodium in his urine
Option A is correct. During starvation, the body breaks down its own tissues, leading to increased sodium excretion in urine.
95
Easy
95 of 269
Remembering
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Polyuria is a condition in which
View answer and explanation
Correct option: A
Amount of urine pass out is more
Option A is correct because polyuria is defined as the excessive production and excretion of urine.
96
Easy
96 of 269
Remembering
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Green glands are excretory organs of
View answer and explanation
Correct option: B
crustacea
Option B (crustacea) is correct because green glands are the excretory organs found in crustaceans.
97
Medium
97 of 269
Understanding
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Reabsorption of the filtrate in the renal tubules takes place by
View answer and explanation
Correct option: C
Either (a) or (b)
Option C is correct because reabsorption in the renal tubules can occur through both active transport (requiring energy) and passive transport (not requiring energy).
98
Medium
98 of 269
Remembering
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The part of nephron involved in active reabsorption of sodium is
View answer and explanation
Correct option: C
proximal convoluted tubule
Option C (proximal convoluted tubule) is correct because the PCT is the primary site for active reabsorption of sodium ions.
99
Medium
99 of 269
Understanding
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Which one of the following statements is false?
View answer and explanation
Correct option: D
Presence of excess urea in blood is uremia
Option C (Presence of ketone sugar in urine is Ketonuria) is correct because it is false. Ketonuria is the presence of ketone bodies, not ketone sugar, in the urine.
100
Medium
100 of 269
Remembering
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Renin is secreted from
View answer and explanation
Correct option: A
Juxtaglomerular cells
Option A (Juxtaglomerular cells) is correct because renin is secreted by the juxtaglomerular cells of the kidney.
101
Easy
101 of 269
Remembering
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The function of Henle’s loop is
View answer and explanation
Correct option: C
Conservation of water
Option C (Conservation of water) is correct because the primary function of Henle's loop is to create a concentration gradient in the medulla of the kidney, which allows for the reabsorption of water from the filtrate.
102
Medium
102 of 269
Remembering
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Renal calculi is
View answer and explanation
Correct option: C
Insoluble mass of proteins in kidney
Option D is correct because renal calculi are insoluble masses of crystallized salts, such as calcium oxalate, that form in the kidneys.
103
Easy
103 of 269
Understanding
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With decrease in blood pressure and blood volume the release of ________ is suppressed. Choose the option which fills the blank correctly
View answer and explanation
Correct option: C
ANF
The correct answer is C (ANF) because Atrial Natriuretic Peptide (ANF) is released in response to increased blood pressure and volume, so its release is suppressed when blood pressure and volume decrease.
104
Easy
104 of 269
Understanding
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Statement I: Reabsorption of water occurs actively in the initial segment of nephron.
Statement II: Tubular secretions help to maintain ionic and acid-base balance of body fluids.
Statement II: Tubular secretions help to maintain ionic and acid-base balance of body fluids.
View answer and explanation
Correct option: D
Statement II is correct but statement I is incorrect.
Option D is correct because reabsorption of water is mostly passive in the initial segment (PCT), and tubular secretions do help maintain ionic and acid-base balance.
105
Easy
105 of 269
Remembering
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A fall in the GFR rate activates the
View answer and explanation
Correct option: A
JG cells to release renin
Option A (JG cells to release renin) is correct because a fall in GFR triggers the juxtaglomerular (JG) cells to release renin, initiating the renin-angiotensin-aldosterone system (RAAS).
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106
Hard
106 of 269
Understanding
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Read the following statements and choose the option with only correct statements.
a. The outer layer of kidney is a tough capsule.
b. Capsule divides kidney into outer cortex and inner medulla.
c. Medulla is divided into medullary pyramids by invagination of cortex into medulla.
d. Calyces project into medullary pyramids.
a. The outer layer of kidney is a tough capsule.
b. Capsule divides kidney into outer cortex and inner medulla.
c. Medulla is divided into medullary pyramids by invagination of cortex into medulla.
d. Calyces project into medullary pyramids.
View answer and explanation
Correct option: D
a and c
Option D is correct because the outer layer of the kidney is indeed a tough capsule, and the medulla is divided into medullary pyramids by invaginations of the cortex.
107
Easy
107 of 269
Remembering
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GFR (Glomerular Filtration Rate) is the amount of filtrate formed by the kidney per
View answer and explanation
Correct option: C
Minute
Option C (Minute) is correct because Glomerular Filtration Rate (GFR) is defined as the volume of filtrate formed per minute.
108
Medium
108 of 269
Remembering
+4 | -1
The ascending and descending limb of Henle’s loop is a respectively lined by
View answer and explanation
Correct option: B
Cuboidal epithelium, sequamous epithelium
Option A is correct because the ascending limb is lined by cuboidal epithelium and the descending limb is lined by squamous epithelium.
109
Medium
109 of 269
Remembering
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Longest loop of Henle is found in
View answer and explanation
Correct option: A
Kangaroo rat
Option A (Kangaroo rat) is correct because kangaroo rats live in arid environments and have extremely long loops of Henle to maximize water reabsorption, producing highly concentrated urine.
110
Easy
110 of 269
Analyzing
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Select the incorrect statements from the following
View answer and explanation
Correct option: D
Kidneys play a significant role in the removal of ammonia directly
Option D is correct because kidneys primarily remove urea, uric acid, and other wastes, but not significant amounts of ammonia directly.
111
Medium
111 of 269
Analyzing
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Assertion: Stimulation of renin secretion will increase the volume of the extra cellular fluid.
Reason: The increased ECF occurs due to decreased active reabsorption of
Reason: The increased ECF occurs due to decreased active reabsorption of
View answer and explanation
Correct option: C
Assertion is true but reason is false
Option C (Assertion is true but reason is false) is correct because renin secretion increases ECF volume, but this occurs due to increased, not decreased, sodium reabsorption.
112
Easy
112 of 269
Remembering
+4 | -1
On an average, the amount of urea excreted out per day is
View answer and explanation
Correct option: B
25 – 30 gm
Option B is correct because the average amount of urea excreted per day is 25-30 grams.
113
Easy
113 of 269
Remembering
+4 | -1
Erythropoietin is secreted from
View answer and explanation
Correct option: D
Kidney
Option D (Kidney) is correct because erythropoietin is primarily secreted by the kidneys in response to hypoxia.
114
Medium
114 of 269
Understanding
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Ultrafiltration occurs in a glomerulus when
View answer and explanation
Correct option: D
Colloidal osmotic pressure plus capsular pressure remain less than glomerular hydrostatic pressure.
Option D (Colloidal osmotic pressure plus capsular pressure remain less than glomerular hydrostatic pressure) is correct because ultrafiltration occurs when the pressure forcing fluid out of the glomerulus (hydrostatic pressure) is greater than the pressures opposing it (colloidal osmotic pressure and capsular hydrostatic pressure).
115
Medium
115 of 269
Remembering
+4 | -1
The medullary gradient is mainly caused by
View answer and explanation
Correct option: A
NaCl and urea
Option A (NaCl and urea) is correct because NaCl and urea are the primary solutes responsible for creating the medullary gradient in the kidneys.
116
Medium
116 of 269
Understanding
+4 | -1
Which of the following statements is correct?
View answer and explanation
Correct option: D
The ascending limb of the Henle’s loop extends as the DCT
Option D (The ascending limb of the Henle’s loop extends as the DCT) is correct because the ascending limb of the loop of Henle directly transitions into the distal convoluted tubule (DCT).
117
Easy
117 of 269
Understanding
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In which part of nephron, reabsorption is minimum from filtrate?
View answer and explanation
Correct option: D
Collecting duct
Option A is correct because the collecting duct is primarily involved in the final adjustments of water reabsorption, making the reabsorption minimum compared to the PCT, DCT, and loop of Henle.
118
Medium
118 of 269
Remembering
+4 | -1
Which of the following disorder is an outcome of irregularities in metabolism of the nitrogenous waste?
View answer and explanation
Correct option: B
Gouty arthritis
Option B is correct because gouty arthritis is a direct result of the irregular metabolism of nitrogenous wastes, specifically uric acid.
119
Medium
119 of 269
Remembering
+4 | -1
Ammonia produced by metabolism is convered into the …A… in the …B… in ureotelic and released into the blood, which is filtered and excreted out by …C… Choose the appropriate options for A, B and C to complete the given NCERT statement
View answer and explanation
Correct option: C
A-urea, B-liver, C-kidney
Option C (A-urea, B-liver, C-kidney) is correct because ammonia is converted into urea in the liver, and then urea is filtered and excreted by the kidneys.
120
Easy
120 of 269
Understanding
+4 | -1
Which of the following sets of animals are uricotelic?
View answer and explanation
Correct option: C
Crow, snake, cockroach and lizard
Option C (Crow, snake, cockroach and lizard) is correct because these animals excrete uric acid as their primary nitrogenous waste.
Revision notes and key takeaways
Review EXCRETORY PRODUCTS AND THEIR ELIMINATION in your textbook or class notes, then use this set to check your understanding.
Showing 91-120 of 269 questions