Biology MCQs

Page No. 21

On which of the following site the posterior pituitary hormone acts predominantly?


aProximal convoluted tubule


bDescending limb of loop of Henle


cAscending limb of loop of Henle


dCollecting tubules


View Answer Collecting tubules

Each human kidney receives _______% of total cardiac out put?


a10%


b20%


c30%


d40%


View Answer 20%

Excessive lactic acid is converted into __________ by liver?


aGlucose


bFructose


cSucrose


dGlycogen


View Answer Glycogen

Which of the following is a sentimentally arranged excretory system?


aProtonephridium


bMetanephridium


cMalpighian tubules


dNephrons


View Answer Metanephridium

The distal blind end of the malpighian tubules bathes freely in____________?


aDigestive tract


bIntestines


cHaemocoel


dCoelom


View Answer Haemocoel

Hydra has no specialized excretory system because:


aIt does not produce waste material


bDue to absence of mesoderm


cThe whole body cells are in contact with water


dIt has pseudocoelom.



In animals excess of nitrogen is excreted primarily in form of___________?


aCreatinine


bTrimethyamine oxide


cPyrimidine


dAmmonia


View Answer Ammonia

In plants, which of the following is a waste product produced both during photosynthesis and respiration?


aCO2


bH2O


cO2


dBoth A and B


View Answer H2O

Which of the following treatment will be administered first in a newly diagnosed renal failure patient?


aRenal transplant


bPeritoneal Dialysis


cLithotripsy


dHemodialysis


View Answer Hemodialysis

Which of the following kidney stones are most common?


aCalcium oxalate


bCalcium phosphate


cUric acid


dAll of these


View Answer Calcium oxalate

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