MCQs For NCERT Class 11 Biology Chapter 19 Excretory Products and Their Elimination

Please refer to the MCQ Questions for Class 11 Biology Chapter 19 Excretory Products and Their Elimination with Answers. The following Excretory Products and Their Elimination Class 11 Biology MCQ Questions have been designed based on the latest syllabus and examination pattern for Class 11. Our experts have designed MCQ Questions for Class 11 Biology with Answers for all chapters in your NCERT Class 11 Biology book.

Excretory Products and Their Elimination Class 11 MCQ Questions with Answers

See below Excretory Products and Their Elimination Class 11 Biology MCQ Questions, solve the questions and compare your answers with the solutions provided below.

Question. Uricotelic mode of passing out nitrogenous wastes is found in 
(a) reptiles and bird
(b) birds and annelids
(c) amphibians and reptiles
(d) insects and amphibians

Question. Ammonia is the main nitrogenous excretory material in 
(a) amphibians
(b) turtles
(c) tadpoles
(d) reptiles

Question. Mechanism of uric acid excretion in a nephron is 
(a) osmosis
(b) diffusion
(c) ultrafiltration
(d) secretion

Question. Why bony fishes, aquatic amphibian and aquatic insects are called ammonotelic animals? 
(a) They excrete ammonia as their excretory product.
(b) They excrete ammonia as a least toxic nitrogenous waste product.
(c) They excrete uric acid in the form of pellet and paste with a minimum loss of water.
(d) These animals have nephridia as their excretory organ which helps to remove nitrogenous waste and maintain a fluid and ionic balance.

Question. Excretion of nitrogenous waste product in semi-solid form occur in 
(a) amniotes
(b) desert animals
(c) ureotelic animals
(d) uricotelic animals

Question. The projections of renal pelvis are called 
(a) hiluses
(b) calyces
(c) medullary pyramids
(d) renal columns

Question. The number of nephrons in a kidney is equal to 
(a) the number of Bowman’s capsules.
(b) sum of Bowman’s capsules and glomeruli.
(c) double the number of Bowman’s capsules.
(d) sum of Bowman’s capsules and Malpighian corpuscles.

Question. Glomerulus and Bowman’s capsule constitute 
(a) nephrotome
(b) renal corpuscle
(c) renal capsule
(d) malpighian tubule

Question. In which part of the excretory system of mammals you can first use the term urine for fluid it contains? 
(a) Bowman’s capsule
(b) Loop of Henle
(c) Collecting tubule
(d) Ureter

Question. Columns of Bertini in the kidneys of mammals are formed as extensions of 
(a) Cortex into medulla
(b) Cortex into pelvis
(c) Medulla into pelvis
(d) Pelvis into ureter

Question. Blood vessel leading to glomerulus is called   
(a) renal artery
(b) renal vein
(c) efferent arteriole
(d) afferent arteriole

Question. Which one of the following is not a part of a renal pyramid? 
(a) Loops of Henle
(b) Peritubular capillaries
(c) Convoluted tubules
(d) Collecting ducts

Question. The efferent arteriole emerging from the glomerulus forms a fine capillary network around the renal tubule called the ______________.   
(a) vasa recta
(b) loop of Henle
(c) collecting duct
(d) peritubular capillaries

Question. Juxta-glomerular apparatus is formed by cellular modification in the   
(a) afferent arteriole and DCT
(b) efferent arteriole and PCT
(c) afferent arteriole and PCT
(d) efferent arteriole and DCT

Question. Which of the following accessory excretory structure eliminates NaCl, lactic acid and urea?   
(a) Kidney
(b) Liver
(c) Sebaceous gland
(d) Sweat gland

Question. Which of the following components of blood does not enter into the nephron?   
(a) Urea
(b) Water
(c) Glucose
(d) Plasma protein

Question. The part of the nephron impermeable to water is   
(a) proximal tubule
(b) distal tubule
(c) ascending limb of Henle’s loop
(d) collecting duct

Question. Reabsorption of chloride ions from glomerular filtrate in kidney tubule occurs by   
(a) active transport
(b) diffusion
(c) osmosis
(d) brownian movement

Question. Colloidal osmotic pressure in blood plasma is mainly due to   
(a) albumin
(b) globulin
(c) fibrinogen
(d) sodium chloride

Question. Which of the following is directly responsible for increasing glomerular blood pressure and hence GFR? 
(a) Aldosterone
(b) ANF
(c) Angiotensin II
(d) Renin

Question. In the renal tubules the permeability of the distal convoluted tubule and collecting duct to water is controlled by 
(a) aldosterone
(b) vasopressin
(c) growth hormone
(d) renin

Question. The function of renin is 
(a) degradation of angiotensinogen
(b) stimulation of corpus luteum
(c) to reduce blood pressure
(d) vasodilatation

Question. Kidney helps in the conservation of useful materials and excretion of wastes and therefore they receive 20% of the heart’s output of blood (as much as the heart and brain combined). On a percentage basis which substance is most completely reabsorbed by the kidneys? 
(a) Water
(b) Glucose
(c) Urea
(d) Sodium

Question. The site and principal mechanism for the passage of glucose into the bloodstream in the human kidney is the 
(a) collecting duct, by active secretion.
(b) distal convoluted tubule, by passive diffusion.
(c) glomerulus, by selective reabsorption.
(d) proximal convoluted tubule, by selective reabsorption.

Question. The ascending loop of Henle is permeable for 
(a) ammonia 
(b) glucose
(c) sodium
(d) water

Question. Loop of Henle takes part in absorption of   
(a) potassium
(b) glucose
(c) water
(d) urea

Question. In comparison to blood plasma, percentage of glucose in glomerular filtrate is 
(a) higher
(b) equal
(c) lower
(d) nil

Question. Glomerular filtration rate (GFR) in a healthy individual is approximately 
(a) 100 ml/minute, i.e., 180 liters per day.
(b) 125 ml/minute, i.e., 180 litres per day.
(c) 120 ml/minute, i.e., 100 litres per day.
(d) 130 ml/minute, i.e., 120 litres per day.

Question. The maximum reabsorption of useful substances back into the blood from filtrate in a nephron occurs in 
(a) PCT
(b) Loop of Henle
(c) DCT
(d) collecting duct

Question. A fall in glomerular filtration rate (GFR) activates 
(a) adrenal cortex to release aldosterone.
(b) adrenal medulla to release adrenaline.
(c) juxta – glomerular cells to release renin.
(d) posterior pituitary to release vasopressin.

Question. The part of the nephron that helps in active reabsorption of sodium is 
(a) bowman’s capsule
(b) distal convoluted tubules
(c) ascending limb of Henle’s loop
(d) proximal convoluted tubules

Question. Which region of the kidney nephron is the main site of amino acid reabsorption? 
(a) Glomerulus
(b) Bowman’s capsule
(c) Proximal convoluted tubule
(d) Distal convoluted tubule

Question. Which of the following hormone is secreted from kidney ? 
(a) ANF
(b) Erythropoietin
(c) Rennin
(d) Aldosterone

Question. Volume of urine is regulated by 
(a) aldosterone
(b) aldosterone and ADH
(c) aldosterone, ADH and testosterone
(d) ADH alone

Question. The hormone that promotes reabsorption of water from glomerular filtrate is 
(a) oxytocin
(b) vasopressin
(c) calcitonin
(d) relaxin

Question. Juxta-glomerular cells of renal cortex synthesizes an enzyme called 
(a) ADH
(b) oxytocin
(c) renin
(d) urochrome

Question. Duct of Bellini is concerned with 
(a) Filtration of urine
(b) Purification of urine
(c) Conduction of urine
(d) All the above

Question. Which one of the following statements in regard to the excretion by the human kidneys is correct? 
(a) Ascending limb of Loop of Henle is impermeable to electrolytes
(b) Descending limb of Loop of Henle is impermeable to water
(c) Distal convoluted tubule is incapable of reabsorbing HCO₃^–
(d) Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules

Question. In ornithine cycle, enzyme arginase breaks down arginine into 
(a) Citrulline and ammonia
(b) Ornithine and ammonia
(c) Ornithine and urea
(d) Citrulline and urea.

Question. Which one is an important constituent of renin angiotensinogen-aldosterone system? 
(a) JGA cell
(b) Macular cell
(c) Erythropoetin
(d) Plasma cell

Question. The voluntary response to the distension of urinary bladder is 
(a) polyurea
(b) micturition
(c) mellitus
(d) menstruation

Question. Which of the following statement is correct? 
(a) Vasa recta is not present in cortical nephrons.
(b) Maximum number of nephrons in kidney are juxtamedullary type.
(c) DCT of many nephrons open into collecting tubule.
(d) All of the above

Question. Which of the following statement is not correct with respect to human kidney? 
(a) The peripheral region is called cortex and central medulla.
(b) Malpighian capsules are present in the cortex region.
(c) Blood enters glomerulus through efferent arterioles.
(d) The concave part of kidney is called hilus.

Question. If Henle’s loop were absent from mammalian nephron which of the following event is to be expected ? 
(a) There will be no urine formation.
(b) There will be hardly any change in the quality and quantity of urine formed.
(c) The urine will be more concentrated.
(d) The urine will be more dilute.

Question. Almost all the aquatic animals excrete ammonia as the nitrogenous waste product. Which of the following statement is not in agreement with this situation? 
(a) Ammonia is easily soluble in water.
(b) Ammonia is released from the body in a gaseous state.
(c) Ammonia is highly toxic and needs to be eliminated as and when formed.
(d) Ammonia gets converted into a less toxic form called urea.

Question. Which one of the following statements in regard to the excretion by the human kidneys is correct? 
(a) Ascending limb of Loop of Henle is impermeable to electrolytes.
(b) Descending limb of Loop of Henle is impermeable to water.
(c) Distal convoluted tubule is incapable of reabsorbing HCO3–.
(d) Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules.

Question. If Henle’s loop were absent from mammalian nephron which of the following is to be expected 
(a) there will be no urine formation
(b) there will be hardly any change in the quality and quantity of urine formed
(c) the urine will be more concentrated
(d) the urine will be more dilute.

Question. Which blood vessel in mammals would normally carry the largest amount of urea? 
(a) Dorsal aorta
(b) Hepatic vein
(c) Hepatic portal vein
(d) Renal vein