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501.

The retroperitoneal kidney isA. kidney of fishB. kidney covered by peritoneum on ventral sideC. kidney covered by peritoneum on dorsal sideD. kidney uncovered by peritorneum on cither side

Answer» Correct Answer - B
502.

Assertion: Laud reptiles are uricotelic animals. Reason: Land reptiles are found in dry conditions.A. Both Assertion and Reas are true and Reason is the correct explanation of AssertionB. th Both Assertion and Reason are true, but Reason is nor the cerrect explanation of AssertionC. Asertion is true, but Reason is falseD. Assertion is false, but Reason is true

Answer» Correct Answer - A
Uricotelic organisms excrete uric acid so, as to conserve water in their body. They inhabit dry areas and excrete non-toxic uric acid.
503.

Arginosuccinase isA. hydrolaseB. ligaseC. lypaseD. oxido-reductase

Answer» Correct Answer - C
Arginosuccinase is a lyase as it breaks arginnosuccinic acid into fumaric acid and arginic acid.
504.

What fo you mena by diuresis?

Answer» Diuresis means excessive urination.
505.

Which of the following glands does not help in excretionA. LiverB. Sweat glandsC. PancreasD. Both (1) and (3)

Answer» Correct Answer - C
506.

At which stage of omithine cycle arginase is usedA. Arginine-OrnithineB. Omithine-CitrulineC. Fumaric acid-ArginineD. Glycolysis-Urea

Answer» Correct Answer - A
507.

Which of the following glands does not help in excretionA. LiverB. Sweat glandsC. FancreasD. Both (a) and (c)

Answer» Correct Answer - D
508.

Human kidneys can produce urine nearly concentrated than the initial filtrate formedA. 1/5 timesB.  10times C.  5 timesD. 4timesÂ

Answer» Correct Answer - D
Human kidneys can produce urine nearly 4 times concentrated than the initial filtrate formed.Â
509.

Which one of the following statement is incorrect?A. Birds and land snails are uricotelic animalsB. Mammals and frogs are ureotelic animalsC. Aquatic amphibians and aquatic insects are ammonotelic animalsD. Birds and reptiles are ureotelic

Answer» Correct Answer - D
510.

In annelids, excretory organs areA. nephridiaB. Malpighian tubulesC. green glandsD. kidneys

Answer» Correct Answer - A
511.

ADH regulates the permeability ofA. proximal convoluted tubuleB. collecting tubule and distal convoluted rubuleC. ascending Iimb of loop of HealeD. descending limb

Answer» Correct Answer - B
512.

The kidneys are locatedA. With the coelomB. Near the buccal cavityC. Near the heartD. Outside the coelom

Answer» Correct Answer - D
513.

Which one of the statement is false?A. Nephrons perform excretion through filtration, reabsorption and secretionB. Nephridia are accessory excretory organs in prawnC. Tapeworm have excretory flarne cellsD. Coxal glands are excretory organs in crustaceans

Answer» Correct Answer - B
514.

The position of kidneys isA. Inter-peritonealB. RetroperitionealC. IntraperitonealD. None of these

Answer» Correct Answer - B
515.

State the parts of nephorn situated in cortical region of kideny

Answer» Malpighian corpuscle, PCT and DCT
516.

The net pressure gradient that causes the fluid to filter out of the glomeruli into the capsule isA. 50 mm HgB. 75 mm HgC. 20 mm HgD. 30 mm Hg

Answer» Correct Answer - C
517.

Urine is excreted out of the body throughA. pelvisB. a-3,b-5, c-2,d-1,e-4C. urinary bladerD. urethra

Answer» Correct Answer - D
 Urine is excreted out of the body through urethra.
518.

Vasopressin is related withA. Dilution of urineB. Quick digestionC. Concentration of urineD. Slow heart beat

Answer» Correct Answer - C
(c) About 19% water is reabsorbed by the action of the psoterior pituitary Anti diuretic hormone (ADH) or vasopressin.
519.

The layer of fibrous connective tissue that surrounds each kidney isA. renal sinusB. renal pelvisC. renal capsuleD. perirenal fat

Answer» Correct Answer - B
520.

All of the following are true exceptA. Renin is secreted by Juxta glomerular cellB. Juxta-glomerular cells are present in afferent arteriolesC. Renin causes conversion of Angiotensino-gen to AngiotensinD. Angiotensin II is a potent vasodilator

Answer» Correct Answer - D
521.

Urea is…..than ammonia.A. less irritantB. more irritantC. more solubleD. more toxic

Answer» Correct Answer - A
522.

 Assertion: Sebum provides a protective oily covering for the skin. Reason: Small amounts of nitrogenous wastes would be eliminated through saliva too.A. if both assertion and reason are true and the reason is correct explanation of the assertionB. if both assertion and reason are true but reason is not a correct explantion of the assertionC. If assertion is true but reason is falseD. If both assertion and reason are false.

Answer» Correct Answer - B
Sebum provides a protective oily covering for the skin.
Small amounts of nitrogenous wastes would be eliminated through saliva too.
523.

Refer to the given figure and select the correct option representing the osmolarity at P,Q,R and S.A. `{:(underset((mOsmolL^(-1)))(P),underset((mOsmolL^(-1)))(Q),underset((mOsmolL^(-1)))(R),underset((mOsmolL^(-1)))(S)),(1200,900,600,300):}`B. `{:(underset((mOsmolL^(-1)))(P),underset((mOsmolL^(-1)))(Q),underset((mOsmolL^(-1)))(R),underset((mOsmolL^(-1)))(S)),(900,1200,300,600):}`C. `{:(underset((mOsmolL^(-1)))(P),underset((mOsmolL^(-1)))(Q),underset((mOsmolL^(-1)))(R),underset((mOsmolL^(-1)))(S)),(300,600,900,1200):}`D. `{:(underset((mOsmolL^(-1)))(P),underset((mOsmolL^(-1)))(Q),underset((mOsmolL^(-1)))(R),underset((mOsmolL^(-1)))(S)),(1200,300,900,600):}`

Answer» Correct Answer - A
524.

Which is the major seat of reabsorption in a nephron?

Answer» Proximal convoluted tuble (PCT)
525.

What is the effect of ADH on blood vessels?

Answer» ADHN asopression has constrictory effects on blood vessels.
526.

Counter-current mechanism helps to maintain a concentration gradient in the medullary interstitium. Presence of such interstitial gradient helps in an easy passage of water from theA. Vasa rectaB. Henle’s loopC. Collecting tubule D. DCTÂ

Answer» Correct Answer - C
 Counter -cunent mechanism helps to maintain a concentration gradient in the medullary interstitium. Presence of such interstitial gradient helps in an easy passage of water from the collecting tubule.Â
527.

 Which factor helps in maintaining an increasing osmolality towards the inner medullary interstitium?  a. Counter current pattern in vasa recta b. Counter current pattern in Henle’s loop c.proximity between the Henle’s loop and vase rectaA. a and bB. a, b and cC. c onlyD. a and c

Answer» Correct Answer - B
The proximity between the Henle’s loop and vasa recta, as well as the counter current in them help in maintaining an increasing osmolarity towards the inner medullary interstitium, i.e. from `300 mOsmolL^(-1)` in the cortex to about `1200 mOsmolL^(-1)` in the innerÂ
528.

The blood in the artificial kidney flows through channels or tubes bounded by `"________"`

Answer» Cellophane membrane.
529.

Math the following `{:("Column I","Column II"),(a.PCT,(i)"Function is" Na^(+)and K^(+)"homeostasis"),(b."Descending loop of Henle",(ii) "Permable of NaCl but impermeable to water"),(c."Ascending loop of Henle",(iii)"Permeable to water but not to salt"),(d.DCT,(iv)"Reabsorbing about 90% of the important buffer" HCO_(3)^(-)"from filtrate"):}`A. `a(i), b (ii), c(iii) d(iv)`B. `a(i), b (iii), c(ii) d(iv)`C. `a(iv), b (iii), c(ii) d(i)`D. `a(ii), b (iii), c(i) d(iv)`

Answer» Correct Answer - C
530.

Which type of kidneys are found in amphibian (frog)A. HolonephricB. MesonephricC. PronephricD. Metanephric

Answer» Correct Answer - B
531.

Which of the following pairs is incorrect?A. Uricotelic -BirdsB. Ureotelic -InsectsC. Ammonotelic TadpoleD. Ureotelic Elephant

Answer» Correct Answer - B
532.

As compared to blood, human urine isA. isotonicB. hypotonicC. hypertonicD. none of the above

Answer» Correct Answer - C
Excessive thirst leading to increased consumption of water is polydipisa.
533.

What is wrong about kidneyA.  Peripheral cortex and central medulla B. Blood enters glomerulus through efferent arterioles C. Malpighian capsules occur in cortex D. Concave part of kidney is called hilum

Answer» Correct Answer - B
Blood enters glomerulus through afferent arterioles.
534.

Which is wrongA. Presence of albumin in urine is albuminariaB. Presence of glucose in urine is glycsuriaC. Presence of ketose sugar in urine is ketonuriaD. Presence of excess urea in blood is uremia

Answer» Correct Answer - C
535.

What is wrong about kidneyA. Peripheral cortex and central medullaB. Blood enters glomerulus through efferent arteriolesC. Malpighian capsules occur in cortexD. Concave part of kidney is called hilus

Answer» Correct Answer - B
536.

Choose the wrong statementA. In ureotelic orgainisms ammonia is not a product of metabolismB. In mammals some amount of urea may be retained in the kidney matrix of ureotelics to maintain osmolarityC. In fishes, kidneys do not play and significant role in the removal of ammonium ionsD. Urea and uric acid are less toxic than ammonia

Answer» Correct Answer - A
537.

Match the excretory functions of section I with the parts of the excretory system in section II. Choose the correct combinations from among the answers given A. (a)(i)-(d), (ii)-(a), (iii)-(b), (iv)-(c)B. (b)(i)-(d), (ii)-(c), (iii)-(b), (iv)-(a)C. (c)(i)-(e), (ii)-(d), (iii)-(a), (iv)-(c)D. (d) (i)-(e), (ii)-(d), (iii)-(a), (iv)-(b)

Answer» Correct Answer - A
538.

Which type of epithelium is found in PCT?

Answer» Brush bordered cuboidal epithelium
539.

Which type of nephrones are less in number, cortical or juxtamedullary nephrons?

Answer» Juxta medulltary nephrons
540.

Which of the following are uricotelic animlasA. Rohu and frogB. Lizard and crowC. Camel and frogD. Earthworm and eagle

Answer» Correct Answer - B
(b) The animals which excrete mainly uric acid are uricotelic. Terrestrial reptiles (lizards and sN//Akes), birds, most insects are uricotelic animals.
541.

Voluntary response to distension of urinary bladder isA. Polyurea B. Micturition C. Diabetes mellitusD. Menstruation

Answer» Correct Answer - B
 Voluntary response to distension of urinary bladder is micturition.Â
542.

Which someone drinks lot of water, ADH release is suppressed.A. When someone drinks lot of water, ADH release is suppressed.B. Exposure to cold temperature stimulates ADH ReleaseC. An increase in glomerular blood flow stimulates formation of angiotensin II.D. During summer, when body loses lot of water by evaporation, the release of ADH is suppressed.

Answer» Correct Answer - A
When someone drinks lot of water, the volume of body flid increases, this switches off the osmoreceptors in the body and suppresses the ADH release
543.

The condition of accurnulation of urea in blood is termed asA. UremiaB. DiuresisC. GlycosuriaD. Haematuria

Answer» Correct Answer - A
544.

The condition where urea accumulates in blood isA. glycosuriaB. uraemiaC. KetonuriaD. acidosis

Answer» Correct Answer - A
545.

Which pllutant accumulates in liver and kidneyA. CopperB. MercuryC. LeadD. Cadmium

Answer» Correct Answer - B
546.

Hypertonicity of fitreate is minimum atA. Base of lop of henleB. Inner most part of medullaC. Outer part of medullaD. Cortical region

Answer» Correct Answer - D
547.

Correct order of excretory organs in Cockroach, Earthworm and Rabbit respectivelyA. Skin, malpighi tubules, kidenyB. Malpighi tubules, nephridia,kidneyC. Nephridia, malpighi tubule, kidneyD. Nephridia, kidney, green gland

Answer» Correct Answer - B
548.

The human kidney `:-`A. is responsible for the storage of nutrients such as glycogenB. produces more dilute urine when the collecting ducta become less permeable to waterC. responds to antidiuretic hormone by increasing urine outputD. get rid of urea from the body by secreting it into the descending arm of the loop of Henle.

Answer» Correct Answer - D
549.

Which of the following statements on human kidney is falseA. Renal plasma flow is normally 660 ml/minB. Blood flow in the cortex is greater than that in the medullaC. Reabsorption of ions and water occurs mainly in the distal convoluted tubulesD. Renal blood flow is decreased in dehyration

Answer» Correct Answer - C
550.

Malpighain tubules remove excretory products fromA. HaemolymphB. Alimentary canalC. Both (a) and (b)D. None of these

Answer» Correct Answer - A