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Earn 100

Which of nitrogenous waste eliminated through saliva is
(a)Urea
(b)Creatinine
(c)
(d)Uric acid

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Important Questions on Excretory Products and Their Elimination
MEDIUM
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Which of the following condition arises due to kidney failure?

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In the diagram of excretory system of human beings given below, different parts have been indicated by alphabets, choose the answer in which these alphabets have been correctly matched with the parts which they represent -

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Medial surface of kidney are ______ while lateral
surface is ______ :-

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How many of the following chordates have flame cells as excretory organ. Planaria, Ascaris, Amphioxus, Tapeworm, Nereis, Scoliodon.

MEDIUM
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Graph depicts the concentration of enzymes involved in urea synthesis in a developing tadpole. It indicates a transition from

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The diagrams show vertical sections of kidneys of coypu, brown rate and kangaroo rat, showing the relative size of cortex and medulla. Coypu are found in freshwater and never short of water to drink. Brown rats are able to go some days without drinking at all. Which kidney belongs to which animal?

MEDIUM
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In a comparison of amounts of urea in human urine, the largest amount of urea would be found with a diet very rich in

EASY
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You and your study partner want to draw the pathway that controls the reabsorption of sodium ions when blood pressure falls. Which of the following is the correct sequence of events?
(a) Aldosterone is released
(b) Kidney tubules reabsorb
(c) Renin is released
(d) Juxtaglomerular apparatus (JOA) recognises a drop in blood pressure.
(e) Angiotensin II is produced
