CBSE Class 11 (Science) Excretory Products — practice questions
106 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) Excretory Products in the app →Mammals are predominantlyGlomerular filtration in the kidney is driven byThe structural and functional unit of the kidney is theADH (vasopressin) acts on the kidney toThe presence of glucose in urine is calledA patient with end-stage renal failure typically requiresBirds, reptiles, and insects are classified as URICOTELIC because they primarily excrete:The functional unit of the human kidney is called the:Most of the GLUCOSE in the glomerular filtrate is reabsorbed in the:ADH (anti-diuretic hormone, vasopressin) acts to:CO2 in the human body is primarily excreted by the:The condition of having high urea levels in the blood (a sign of kidney failure) is called:Which nitrogenous waste is the most toxic?Which nitrogenous waste needs the least water to remove?Ammonotelic animals include bony fishes and:Ammonia is generally excreted across body or gill surfaces by:Ammonia is converted into urea in the:Which of these groups is ureotelic?Uricotelic animals include birds, insects, land snails and:Flame cells are otherwise known as:Each nephron has a renal tubule and a:The glomerulus together with Bowman's capsule is called the:How much blood is filtered by the kidneys each minute?The glomerular filtration rate in a healthy person is about:Comparing 180 litres filtered with 1.5 litres of urine, reabsorption is nearly:A fall in glomerular filtration rate makes the JG cells release:Angiotensin II activates the adrenal cortex to release:Antidiuretic hormone is also known as:ADH mainly increases the reabsorption of:How much urine does an adult human pass per day on average?Human urine is slightly acidic, with a pH of about:How much urea does an adult excrete per day on average?Which nitrogenous waste is excreted by ureotelic animals?Reptiles, birds and insects mainly excrete nitrogenous waste as which compound?Animals that mainly excrete ammonia are described by which term?Why is ammonia excretion practical mainly for aquatic animals?Which waste is produced with the minimum loss of water?Where in the body is ammonia converted into urea in mammals?The excretory structures of flatworms like Planaria are known as what?Protonephridia are primarily concerned with which function?Which excretory structures are found in earthworms?Cockroaches and most other insects excrete through which organs?Prawns and other crustaceans excrete using which structures?Which cephalochordate has protonephridia as its excretory structures?The human excretory system includes which set of organs?Between which vertebrae are the human kidneys situated?What is the shape and colour of a human kidney?What is the notch on the inner concave surface of the kidney called?The broad funnel shaped space inside the hilum is called what?What are the extensions of renal cortex between medullary pyramids called?Which zone of the kidney is divided into conical medullary pyramids?About how many nephrons does each kidney contain?What is the functional unit of the kidney?Which vessel brings blood into the glomerulus?The renal tubule begins with which double walled cup-like structure?Which part of the nephron is shaped like a hairpin?The ascending limb of Henle loop continues as which region?Distal convoluted tubules of many nephrons open into what?Which parts of the nephron lie in the kidney cortex?Nephrons with a very short loop of Henle are called what?Which nephrons have a very long loop running deep into the medulla?The vessel running parallel to Henle loop is called what?In which nephrons is the vasa recta absent or highly reduced?Which three processes together form urine?How much blood do the kidneys filter per minute on average?How many layers does blood pass through during glomerular filtration?The epithelial cells of Bowman capsule are known as what?What are the minute spaces between podocytes called?Glomerular filtration is called ultrafiltration because blood is filtered so finely that what stays behind?Filtrate formed by the kidneys per minute is known as what?What is the GFR of a healthy individual?Which structure regulates the glomerular filtration rate?The JGA is formed by modifications in which two structures?A fall in GFR makes JG cells release which substance?About how much of the filtrate is reabsorbed by the renal tubules?Glucose and amino acids in the filtrate are reabsorbed by which mechanism?Which substances are secreted by tubular cells into the filtrate?The proximal convoluted tubule is lined by which kind of epithelium?What fraction of electrolytes and water does the PCT reabsorb?Which limb of Henle loop is permeable to water but nearly impermeable to electrolytes?Which limb of Henle loop is impermeable to water?Which segment can reabsorb large amounts of water to make concentrated urine?The counter current mechanism involves which two structures?How does osmolarity change from renal cortex to inner medulla?Which two substances mainly create the medullary osmotic gradient?Which hormone, released from the neurohypophysis, prevents diuresis?What triggers osmoreceptors to stimulate ADH release?Renin converts which blood protein into angiotensin I?Angiotensin II activates which gland to release aldosterone?What does aldosterone cause in the distal parts of the tubule?Which hormone acts as a check on the renin-angiotensin mechanism?Angiotensin II is a powerful what?Urine is stored in the bladder until a signal comes from where?The release of urine is called what?What is the approximate pH of normal human urine?Ketone bodies in urine are an indicator of which disorder?Which organ secretes bile containing bilirubin and biliverdin?The primary function of sweat is what?Sebaceous glands release which substances in sebum?Accumulation of urea in blood is called what?Which process removes urea from the blood of uremic patients?Which anticoagulant is added to blood before it enters a dialysing unit?Why does the dialysing fluid lack nitrogenous wastes?The ultimate treatment for acute kidney failure is what?Renal calculi are made mainly of what?Inflammation of the glomeruli of the kidney is called what?