Class 11- Biology- chapter 16- Excretory Products and their Elimination InstructionTotal Questions : 20Total time :20 minTotal Marks : 20 x 3 = 60 MarksEach Correct Question carries : 3 MarksEach incorrect Question Carries : -1 MarksEach Unattempted Question carry : 0 MarksBe careful On Negative Markings 1. Which is not part of renal pyramid Peritubular capillaries Loop of Henle Collecting ducts Convoluted tubules None 2. Which one of the following statements is correct with respect to salt water balance inside the body of living organisms? Salmon fish excretes lot of stored saIt through gill membrane in fresh water. When water is not available camels do not produce urine but store urea in tissues. Paramecium discharges concentrated salt solution by contractile vacuoles. The body fluids of fresh water animals are generally hypotonic to surrounding water. None 3. The excretory material of bony fish is Amino acid Urea Ammonia Protein None 4. How many molecules of ammonia are required to form 8 molecules of urea? 4 34 8 16 None 5. Which of the following statement is false Nephrons perform excretion through filtration, reabsorption and secretion. Nephridia are accessory excretory organs in Prawn Tapeworm have excretory flame cells Nephrons begin with Bowmen's capsule having glomerulus None 6. Connecting tubule acts as part of which organ Kidney Liver Pancreas Heart None 7. The filtrate from the glomerulus contains Urea, uric acid, glucose and water Urea, uric acid and ammonia Urea, uric acid, ammonia and water Urea and uric acid None 8. Complete the following paragraph by selecting the option that correctly fills the blanks (i) - (iv).The kidneys have built-in mechanisms for the regulation of glomerular filtration rate. One such efficient mechanism is carried out by (i). It is a special sensitive region formed by cellular modifications in the (ii) and the (iii) at the location of their contact. A fall in GFR can activate the JG cells to release (iv) which can stimulate to glomerular blood flow and thereby brings GFR back to normal. ANF PCT Efferent arteriole Angiotensin ANF DCT Afferent arteriole Renin JGA DCT Afferent arteriole Renin JGA PCT Efferent arteriole Angiotensinogen None 9. lonosnic pathway occurs in Ureotelism Guanotelism Uricotelism Ammonotelism None 10. If kidneys fail to reabsorb water, the effect on tissue would Remain unaffected Absorb water from blood plasma Shrink and shrivel Take more O2 from the blood None 11. Which one of the following statements in regard to the excretion by the human kidneys is correct ? Descending limb of loop of Henle, impermeable to water Nearly 99% of glomerular filtrate is reabsorbed by renal tubules Distal convoluted tubule is incapable reabsorbing 𝐻 𝐶 𝑂 3 Ascending limb of loop of Henle in impermeable to electrolytes None 12. Which disease is caused due to high accumulation of uric acid in the bloodstream? Hypouremia Hyperuremia Uremia Hyperuricemia None 13. The function of counter current mechanism is performed byI. GillsII. KidneysIII. IntestinesIV. Lungs II and IV only I, II, and IV I, II, III, and IV I and III only None 14. Study the following. (i) Uricase enzyme is not found in apes and man.(ii) Purine metabolism leads to the formation of uric acid.(iii) In ureotelic organisms, carbondioxideCO2 and ammonia converted into urea through the Cori cycle.(iv) More energy consumed is for the production of uric acid.(v) TMO (Trimethylamine oxide) protects the proteins from the effect of urea in Chondrichthyes fishes. Which of the given statements are correct? All, except V All, except IV All, except II All, except III None 15. Mark the inappropriate term w.r.t. the glomerular filtration. Non selective Occurs due to pressure difference Passive process Active process None 16. The nephrons discharge their urine at the Renal pelvis Urinary bladder Renal pyramid Urethra None 17. Ducts of Bellini open in Major calyx Renal sinus Renal pyramid Minor calyx None 18. Column of Bertin is extension of Renal-capsule into cortex Medulla into cortex Renal pelvis into renal, sinus Cortex into medulla None 19. Which of the following statements is incorrect? Inside the kidney the cortical region extends in between the medullary pyramids as renal pelvis. Renal corpuscle, proximal convoluted tubule (PCT) and distal convoluted tubule(DCT) of the nephron are situated in the cortical region of kidney. Glomerulus along with Bowman's capsule is called the renal corpuscle. The medullary zone of kidney is divided into a few conical masses called medullary pyramid projecting into the calyces. None 20. The urine under normal conditions does not contain glucose because Glucose of blood is not filtered in the glomerulus. Glucose in glomerular filtrate is reabsorbed in the uriniferous tubules. The normal blood sugar is fructose. Glucose in glomerular filtrate is converted into glycogen. 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