MCQ Questions for Class 11 Biology Chapter 19 Excretory Products and their Elimination with Answers
Solving the Excretory Products and their Elimination Multiple Choice Questions of Class 11 Biology Chapter 19 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Excretory Products and their Elimination Class 11 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 19 Biology Class 11 and cross-check your answers during preparation.
I. Select the correct answer from the following questions:
Question 1.
Blood coming out of liver has high concentration of
(a) Urea
(b) Protein
(c) Erythrocytes
(d) Oxygen.
Answer
Answer: (a) Urea.
Question 2.
Urinary bladder opens into
(a) tlreter
(b) Urethra
(c) Uterus
(d) All of these.
Answer
Answer: (b) Urethra.
Question 3.
Reabsorption of water in the kidney is under control of
(a) ACTH
(b) LH
(c) PSH
(d) ADH.
Answer
Answer: (d) ADH.
Question 4.
A normal adult excretes urine per day
(a) 3-4 litres
(b) 4-5 litres
(c) 12-i5 litres
(d) 2-3 litres.
Answer
Answer: (c) 12-15 litres.
Question 5.
Excretory product of mammals in mainly
(a) Uric acid
(b) Ammonia
(c) Urea
(d) Creatinine.
Answer
Answer: (c) Urea.
Question 6.
Loop of Henle lies in
(a) Medulla
(b) Ureter
(c) Cortex
(d) Pelvis.
Answer
Answer: (a) Medulla.
Question 7.
Removal of amino group from an amino acid is
(a) Amination
(b) Excretion
(c) Deamination
(d) Defecaetion.
Answer
Answer: (d) Defecaetion.
Question 8.
Glomerular filtrate differs from plasma
(a) Yellowish colour
(b) Presence of urea
(c) Absence of proteins
(d) Potassium concentration
Answer
Answer: (c) Absence of proteins.
Question 9.
Glomerular present in glomerular filtrate is reabsorbed in
(a) Distal convoluted tubule
(b) Bowman’s capsule
(c) Loop of Henle
(d) Proximal convoluted tubule.
Answer
Answer: (d) Proximal convoluted tubule.
Question 10.
Nitrogenous wastes are excreted as uric acid in birds to help in
(a) Elimination of excess heat
(b) Conservation of body heat
(c) Reduce the change of kidney stone formation
(d) Conservation of water inside body.
Answer
Answer: (d) Conservation of water inside body.
Question 11.
Structural and functional unit of kidney is
(a) Loop of Henle
(b) Malpighian body
(c) Glomerular
(d) Nephron.
Answer
Answer: (d) Nephron.
Question 12.
Glomerular capillaries receive blood having a hydrostatic pressure of
(a) 80mm Hg.
(b) 85mm Hg.
(c) 75mm Hg.
(d) 90mm Hg.
Answer
Answer: (c) 75 mm. Hg.
Question 13.
Excretion of urea is called
(a) Ammonotelism
(b) Uricotelism
(c) Urination
(d) Ureotelism.
Answer
Answer: (d) Ureotelism.
Question 14.
In glycosuria, urine contains
(a) Glucose
(b) Inoraganic ions
(c) Amino acids
(d) Epithelial cells.
Answer
Answer: (a) Glucose.
Question 15.
The major excretory organs in mosquitoes are
(a) Flame cells
(b) Nephrons
(c) Nephridia
(d) Malpighian tubules.
Answer
Answer: (d) Malpighian tubules.
Question 16.
Filration in the nephron is brought about by
(a) Passive diffusion
(b) Active transport
(c) Secretion
(d) Blood pressure.
Answer
Answer: (d) Blood pressure.
Question 17.
The plasma resembles in its composition with the filtrate produced in glomerulus except for the presence of
(a) Amino acids
(b) Glucose
(c) Chlorides
(d) Proteins.
Answer
Answer: (d) Proteins.
Question 18.
When a person is suffering from poor renal reabsorption which one of the following will not help in maintenance of blood volume?
(a) Increased ADH secretion
(b) Decreased arterial pressure in kidneys
(c) Increased arterial pressure in kidneys
(d) Decreased glomerular filtration.
Answer
Answer: (c) Increased arterial pressure in kidneys.
Question 19.
In such patients, urea can be removed by a process called
(a) Uremia
(b) hemodialysis
(c) renal failures
(d) Glomerulonephritis
Answer
Answer: (b) Hemodialysis.
Question 20.
An adult human excretes on an average of urine per day.
(a) 1 to 1.5 litres
(b) 2 to 2.5 litres
(c) 500 gram
(d) 250 gram
Answer
Answer: (a) 1 to 1.5 litres.
II. Fill in the blanks
Question 1.
………….., …………. and …………. are the major forms of nitrogenous wastes excreted by the animals.
Answer
Answer: Ammonia, urea, uric acid
Question 2.
The process of excreting ………… is Ammonotelism.
Answer
Answer: ammonia
Question 3.
………….. are the tubular excretory structures of earthworms and other annelids.
Answer
Answer: Nephridia
Question 4.
…………… tubules are the excretory structures of most of the insects including cockroaches.
Answer
Answer: Malpighian
Question 5.
…………….. perform the excretory function in crustaceans like prawn.
Answer
Answer: Antennal glands or green glands
Question 6.
In humans, the excretory system consists of ………….., …………., …………. and …………..
Answer
Answer: a pair of kidneys, one pair of ureters, a urinary bladder, a urethra
Question 7.
Each kidney of an adult human measures ………….. in length, …………., ………… with an average weight of ………….
Answer
Answer: 10-12 cm, 5-7 cm in width, 2-3 cm in thickness, 120-170 g
Question 8.
Inside the kidney, there are two zones, an outer cortex and an inner ………….
Answer
Answer: Irrational
Question 9.
A hairpin shaped Henle’s loop is the next part of the tubule which has a ……………..
Answer
Answer: descending and ascending limb
Question 10.
Such nephrons are called ……….. nephrons.
Answer
Answer: cortical
Question 11.
The glomerular capillary blood pressure causes filtration of blood through 3 layers i.e., the …………….. the epithelium of Bowman’s capsule and a basement membrane between these two layers.
Answer
Answer: endothelium of glomerular blood vessels
Question 12.
GFR in a healthy individual is approximately …………..
Answer
Answer: 125ml/minute
Question 13.
Reabsorption of water also occur ………….. in the initial segments of the nephron.
Answer
Answer: passively
Question 14.
Large amounts of water could be reabsorbed conditionally from this region to produce a ……………
Answer
Answer: concentrated urine.
Question 15.
ANF can cause ………….. and thereby …………. the blood pressure.
Answer
Answer: vasodilation, decrease
III. Mark the statements (T) True or (F) False:
Question 1.
ADH facilitates water reabsorption from latter parts of the tubule, thereby preventing diuresis.
Answer
Answer: True.
Question 2.
Angtiotensis II, being a powerful vasoconstrictor, increases the glomerular blood pressure and therby GFR.
Answer
Answer: True
Question 3.
The process of release of urine is called the micturition reflex and the neural mechanisms causing it is called the micturition.
Answer
Answer: False.
Question 4.
The kidneys, lungs, liver and skin also help in the elimination of excretory wastes.
Answer
Answer: True.
Question 5.
Our lungs remove large amounts of CO2 (18 litres/day) and also significant quantities of water every day.
Answer
Answer: True.
Question 6.
Sweat produced by the sweat glands is a watery fluid containing NaCl. small amounts of urea, lactic acid, etc.
Answer
Answer: True.
Question 7.
Kidney transplantation is the ultimate method in the correction of acute renal failures (kidney failure).
Answer
Answer: True.
Question 8.
Stone or insoluble mass of crystallised salts (oxalates) formed within in kidney.
Answer
Answer: True
Question 9.
Human kidneys can produce urine only one tiitie concentrated than the initial filtrate formed.
Answer
Answer: False.
Question 10.
NaCl is transported by the descending limb of Henle’s loop which is exchanged with the ascending limb of vasa recta.
Answer
Answer: False.
Question 11.
Collecting duct also plays a role in the maintenance of pH and ionic balance of blood by the selective secretion of H+ and K+ ions.
Answer
Answer: True.
Question 12.
PCT is also capable of reabsorption of HCO3– and selective recretion of hydrogen and potassium ions.
Answer
Answer: False.
Question 13.
The epithelial cells of Bowman’s capsule called podocytes are arranged in an intricate manner so as to leave some minute spaces called Alteration slits or slit pores.
Answer
Answer: True.
Question 14.
The Malpighian corpuscle, PCT and DCT of the nephron are situated in the cortical region of the kidney where as the loop of Henle dips into the medulla.
Answer
Answer: True.
Question 15.
Antennal glands are the tubular exretory structures of earthworms and other annelids.
Answer
Answer: False.
IV. Match the column I with column II.
| Column I | Column II |
| (a) Aquatic amphibians and aquatic insects are | 1. Cockroaches |
| (b) Reptiles, birds, land snails and insects | 2. Prawn |
| (c) Malpighian tubules | 3. Columns of Bertini |
| (d) Antennal glands or green glands | 4. Uricotelic animals. |
| (e) Meduallary pyramids | 5. ammonotelic in nature. |
| (f) Proximal convoluted tubule | 6. Vasodilation and thereby decrease the blood pressure. |
| (g) Distal convoluted tubule | 7. CNS (central nervous system) |
| (h) glomerular nitration rate | 8. in the skin can eliminate certain substances |
| (i) Vasa recta | 9. the renal tubules. |
| (j) Atrial Natriuretic Facter (ANF) can cause | 10. PCT |
| (k) Stretch receptors on the walls of the bladder send signals to the | 11. sodium-potassium balance in blood. |
| (l) Sweat and sebaceous glends | 12. 180 litres per day |
| (m) Ketone bodies | 13. DCT |
| (n) NH3 to maintain the pH | 14. counter current mechanism |
| (o) 99 percent of the filtrate has to be reabsorbed by | 15. Ketonuria |
Answer
Answer:
| Column I | Column II |
| (a) Aquatic amphibians and aquatic insects are | 5. ammonotelic in nature. |
| (b) Reptiles, birds, land snails and insects | 4. Uricotelic animals. |
| (c) Malpighian tubules | 1. Cockroaches |
| (d) Antennal glands or green glands | 2. Prawn |
| (e) Meduallary pyramids | 3. Columns of Bertini |
| (f) Proximal convoluted tubule | 10. PCT |
| (g) Distal convoluted tubule | 13. DCT |
| (h) glomerular nitration rate | 12. 180 litres per day |
| (i) Vasa recta | 14. counter current mechanism |
| (j) Atrial Natriuretic Facter (ANF) can cause | 6. Vasodilation and thereby decrease the blood pressure. |
| (k) Stretch receptors on the walls of the bladder send signals to the | 7. CNS (central nervous system) |
| (l) Sweat and sebaceous glends | 8. in the skin can eliminate certain substances |
| (m) Ketone bodies | 15. Ketonuria |
| (n) NH3 to maintain the pH | 11. sodium-potassium balance in blood. |
| (o) 99 percent of the filtrate has to be reabsorbed by | 9. the renal tubules. |
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