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eax arene Excretory, , Products and, Their Elimination, , Excretory System, , Select the incorrect statement from the following, , (a) Animals accumulate ammonia, urea, uric acid, CO, and water by metabolic activities., , (b) Animal accumulate substances like ions (Na", K", CI) and urea, ammonia, uric acid, CO,, and water are removed totally or partially., , (c) Ammonia produced by metabolism is converted into urea in the liver of mammals, , (d) Kidneys play significant role in the removal of ammonia directly, , Sclect ammonotclic from the following, , (a) Many bony fishes (b) Aquatic amphibians, , (c) Aquatic insects (d) All of these, , Select the order of toxicity., , A. Ammonia B. Urea C. Unie acid, , (a) A>B>C (b) B>A>C (c) C>A>B (d) C>B>A, Which excretory product requires maximum water for its climination?, , (a) Ammonia (b) Urea (c) Uric acid (d) Creatinine, , Select the incorrect statement from the following, , (a) Ammonia is readily soluble in water., , (b) Ammonia is generally excreted by the process of diffusion., , (c) Ammonia is excreted as ammonium ion through gill surface in fishes, , (d) Ammonia is the major and urea and uric acid are the minor forms of nitrogenous waste, excreted by animals., , Metabolic wastes containing nitrogen in our body are due to, , (a) Carbohydrates (b) Proteins (c) Fats (d) Vitamins, , Excretion involves the process in which, , (a) Harmful substances in the body are chemically changed., , (b) Substances of no further use or those present in excessive quantities are thrown out of the body, (c) Harmful substances are stored in cells before being eliminated., , (d) Expulsion of urine from the urinary bladder and sweat from the skin, , Which of the following is Urcotclic?, , (a) Mammals (b) Most of the ‘rE Me ABORe BE nerOfficial, , (c) Marine fishes (d) All the above, , Scanned with CamScanner
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19.2 Excretory Products and Their Elimination, 9. Ammonia which is produced by metabolism is converted into A in the liver of, mammals and released into B which is filtered and Cc out by kidney, (a) A-Unic acid, B—Blood, C—exereted, (b) A-Urea, B—Blood, C—excreted, (c) A-Amino acid, B-Blood, C-excreted, (d) A-Sugar, B-Blood, C-excreted, 10. Which of the following is uricotclic?, (A) Reptiles (B) Birds (C) Insects (D) Land snails, (a) A,BandC only (b) Band C only (c) A and D only (d) All of these, 11. With respect to the mode of excretion, bony fish falls into what category of organism?, (a) Ureotelic (b) Uricotelic, (c) Ammonotelic (d) Osmoconformers, 12. Aquatic animals are mostly ammonotelic because, (a) Ammonia helps in checking the inflow of water into body., (b) Excretion of ammonia requires large amount of water which is available to these animals., (c) Water contains less nitrogen., (d) These get less light., 13. What gets increased in blood if liver becomes functionless?, (a) Urea (b) Ammonia (c) Une acid (d) Proteins, 14. Nitrogenous excretory product of frog tadpole is, (a) Ammonia (b) Urea (c) Guanine (d) Uric acid, 15. In aquatic organisms, the waste end product of nitrogen metabolism is, (a) Urea (b) Nitrogen (c) Ammonia (d) Allantois, 16, The chief nitrogenous waste product present in urine of frog is, (a) Ammonia (b) Urea (c) Uric acid (d) Allantoin, 17. Nitrogenous waste is excreted mainly as, (a) Urea in both frog and tadpole (b) Urea in frog and ammonia in tadpole, (c) Uric acid in frog and urea in tadpole (d) Urea in tadpole and ammonia in frog, 18. Urea is derived from, (a) Fats (b) Amino acids, (c) Carbohydrates (d) Unie acid, 19. Which of the following sets of animals produce the same substances as their chief excretory, product?, (a) Fish, pigcon and frog (b) Camel, housefly and snake, (c) Frog, monkey and dog (d) Amoeba, ant and antelope, 20. Which of the following sets of animals are uricotelic?, (a) Fish, snake, fow! and man (b) Fish, frog, lizard and fow!, (c) Crow, snake, cockroach and lizard (d) Camel, dog, monkey and man, 21. Excretion of nitrogenous waste product mainly as uric acid by birds is helpful in, (a) Conserving body heat (b) Conserving water, Eliminat! ce! ter (d) Eliminating ex ., <) ee Se ve iminating "4 8)BookCornerOfficial, , Scanned with CamScanmer
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Excretory Products and Their Elimination 19.3, 22. Uric acid is formed in human being from, (a) Proteims (b) Glucose (c) Purines (d) Pyrimidines, 23. Uric acid is excreted by, (a) Pigeon (b) Frog (c) Rabbit (d) Man, 24. The least toxic nitrogenous waste is, (a) Ammonia (b) Ammonia + Urea, (c) Urea (d) Uric acid, 25. Marine teleost fishes excrete, (a) Unic acid (b) TMO (c) Ammonia (d) All of these, 26. Sclect the correct statement from the following:, (A) In most of the invertebrates, excretory structures are in complex tubular forms., (B) Vertebrates have simple tubular organ as excretory structure like kidney., (C) Protonephridia is primarily concerned with excretion., (D) Protonephridia are excretory structure in rotifers, some annelids and cephalochordates, (Amphioxus)., (a) A (b) B (c) C (d) D, 27. Excretory and osmoregulatory structure in cockroach is, (a) Flame cells (b) Green glands, (c) Nephridia (d) Malpighian tubules, 28. The animal which retains urea for hypertonicity is (most appropriate), (a) Elasmobranch (b) Man (c) Bird (d) Amphibian, 29. Malpighian tubules are the excretory organs in, (a) Platyhelminthes (b) Cockroach (c) Pila (d) Ascaris, 30. In annelids, excretory organs are, (a) Nephridia (b) Malpighian tubules, (c) Green glands (d) Kidneys, 31. The excretory organs in prawn are, (a) Malpighian tubules (b) Nephridia, (c) Kidneys (d) Green glands or antennal gland, 32. Green glands are excretory organs of, (a) Moths (b) Crayfishes (c) Scorpions (d) Spiders, 33. Coxal glands are excretory organs in, (a) Spiders and scorpions (b) Insects, (c) Annelids (d) Molluses, 34. Which of these parts in vertebrates functionally corresponds to the contractile vacuole of, protozoans?, (a) Heart (b) Cloaca (c) Sweat glands (d) Kidneys, 35. In humans, the excretory system coexist of, (a) Pair of kidneys (b) Pair of ureters, (c) A urinary bladder and a urethra (d) All of these, t.me/BookCornerOfficial, , Scanned with CamScanmer
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19.4 Excretory Products and Their Elimination, 36. Kidneys in human is situated between, (a) T12-+13 (b) T11-L2 (c) TI2-L! (d) T12-L5, 37. The correct dimensions of human kidney are, Length Width Thickness Weight, (a) 10-12 cm 5-7.cm 2-3.cm 120-170 gm, (b) 10-12 cm 23cm 5-7 cm 120-140 gm, (c) 12-14 cm 5-7 cm 2-3.cm 120-140 gm, (d) 12-14 cm 2-3.cm 2-3.cm 120-170 gm, 38. Which of the following is correct about hilum of kidney?, , 39., , 41., , 42., , 45., , (a) It is present on the convex outer surface., , (b) It is present at the inner convex surface., , (c) It is notch through which ureter, nerve and blood vessel enter., (d) It is the place where the calyces are open,, , Which of the following is incorrect about human kidney?, , (a) Kidney is covered by tough capsule, , (b) Kidney is divided into cortex and medulla on the outer side, , (c) The cortex is extended in between the medullary pyramid and the renal column of bertini., (d) Kidney is situated close to the dorsal inner wall of abdominal cavity., , Each kidney has (nearly) how many nephrons’?, (a) 1 million (b) 2 million (c) 4 million (d) 3 million, The extension of cortex in medulla is known as, (a) Columnae carneae (b) Columns of bertini, (c) Renal columns (d) both (b) and (c), Each nephron consists of, (a) Glomerulus (b) Renal tubules, (c) Both (a) and (b) (d) Calyces, » Glomerules along with Bowman's capsule is called, (a) Renal corpuscle (b) Malpighian tubule, (c) Malpighian body (d) Both (a) and (c), A part of Nephron is situated in cortex completely, A. Malpighian Corpuscle B. PCT, c. DCT D. Loop of Henle, E. Collecting duct, (a) A, Band C only (b) B and C only, (c) A, B, C and D only (d) D and E only, , Select the incorrect statement from the following:, , (a) The DCTs of many nephrons opens into a straight tube called collecting duct., , (b) In cortical nephrons (majority), the loop of Henle is too short and extended only very little, in medulla., , (c) In juxta medullary nephrons (minority), the loop of Henle is very long and runs deeply, into medulla., , (d) Vasa recta is not a part of peritubular network ., , t.me/BookCornerOfficial, , Scanned with CamScanmer
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Excretory Products and Their Elimination 19.5, , , , 46., , 47., , 48., , 49., , 51., , 55., , Two kidneys of human beings lie, , (a) At the level of ovaries, , (b) At the same level, , (c) Left kidney at a higher level than the right one, (d) Right kidney at a higher level than the left one, , Which term is used both for a part of kidney and a part of skeleton in the mammals?, (a) Centrum (b) Pelvis (c) Cortex (d) Medulla, Mammalian kidney serve to excrete, , (a) Excess water, urea and amino acids, , (b) Excess salts, urea and excess water, , (c) Excess salts, excess water and excess amino acids, (d) Excess salts, urea and water, , The part through which arteries and veins enter or leave the kidney is called, , (a) Major calyces (b) Minor calyces, , (c) Hilus (d) Renal pore, , Cells named podocytes occur in the wall of, , (a) Neck region of nephrons (b) Glomerular capillaries, , (c) Outer wall of Bowman's capsules (d) Inner wall of Bowman's capsules, A malpighian corpuscle is, , (a) Another name for nephron, , (b) An excretory structure of insects, , (c) Combined name for glomerulus and Bowman's capsule, (d) None of the ahove, , Blood vessel leading to glomerulus is called, (a) Renal artery (b) Renal vein, (c) Efferent arteriole (d) Afferent arteriole, , . Blood vessel draining the glomerulus in a mammalian nephron is called, , (a) Afferent arteriole and is narrower than the vessel entering it., (b) Efferent venule and is narrower than the vessel entering it., (c) Efferent arteriole and is narrower than the vessel entering it., (d) Renal artery and is wider than the vessel entering it., , In mammalian kidneys, the Bowman’s capsules or Malpighian corpuscles occur in, (a) Cortex (b) Medulla, , (c) Pelvis (d) All of these, , Ina glomerulus, , (a) Afferent arteriole is thicker than efferent arteriole., (b) Afferent capillanes are thicker than efferent capillaries., (c) Afferent capillaries are thinner than efferent capillaries., (d) Afferent arteriole is thinner than efferent arteriole., , Which one of these is not a part of uriniferous tubule?, (a) Loop of Henle (b) Collecting duct, , (c) Bowman's capsule (d) Distal comruktes ok CornerOfficial, , Scanned with CamScanmer
