JAMB and WAEC Biology questions: Excretion

52 questions with answers and explanations. Tap an option to check yourself.

1. Question 41· Excretion· WAEC

   Which of these substances is normally absent from the urine of a healthy person?

   • Asalts
   • Burea
   • Cwater
   • Dglucose

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   Explanation and discussion

2. Question 42· Excretion· JAMB

   Plants excrete oxygen as a by-product of

   • Aphotosynthesis
   • Brespiration
   • Ctranspiration
   • Dgermination

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   Explanation and discussion

3. Question 43· Excretion· JAMB

   Urine passes from each kidney to the bladder through the

   • Arenal artery
   • Burethra
   • Cureter
   • DBowman's capsule

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   Explanation and discussion

4. Question 44· Excretion· JAMB

   Ultrafiltration in the kidney takes place in the

   • Aglomerulus and Bowman's capsule
   • Bloop of Henle
   • Ccollecting duct
   • Dureter

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5. Question 45· Excretion· JAMB

   In Amoeba, contractile vacuoles remove

   • Aoxygen
   • Bfood
   • Cexcess water
   • Durea

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6. Question 46· Excretion· WAEC

   The main nitrogenous waste of mammals is

   • Acarbon dioxide
   • Buric acid
   • Cammonia
   • Durea

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7. Question 47· Excretion· WAEC

   The hormone ADH helps the kidney to

   • Aexcrete more salt
   • Breabsorb more water when the body is dehydrated
   • Cfilter more blood
   • Dmake urea

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8. Question 48· Excretion· JAMB

   Many plants get rid of some waste substances by storing them in

   • Aflowers only
   • Broot hairs
   • Cleaves that later fall off
   • Dthe xylem permanently

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9. Question 49· Excretion· WAEC

   The organ of excretion in earthworms is the

   • Aflame cell
   • BMalpighian tubule
   • Cnephridium
   • Dkidney

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10. Question 50· Excretion· JAMB

    The main nitrogenous waste removed by mammalian kidneys is

    • Acarbon(IV) oxide
    • Buric acid
    • Cammonia
    • Durea

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    Explanation and discussion

11. Question 51· Excretion· JAMB

    The main nitrogenous waste excreted by birds is

    • Acarbon(IV) oxide
    • Burea
    • Cammonia
    • Duric acid

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    Explanation and discussion

12. Question 52· Excretion· WAEC

    The excretory organ of an earthworm is the

    • Akidney
    • Bflame cell
    • CMalpighian tubule
    • Dnephridium

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    Explanation and discussion