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Biology Past Questions and Answers

Topic: Excretion

Jamb Biology Questions - Excretion

Question 11:
The major function of contractile vacuole in amoeba is
  • A To secrete enzyme to digest food particles
  • B To store excess food materials
  • C To excrete nitrogenous waste
  • D To absorb water from the surrounding
  • E To collect and expel water in the cytoplasm
View Answer & Explanation
Question 12:
During excretion of urea there is also a corresponding re-absorption of water into the blood. This re-absorption takes place in the
  • A Uriniferous tubules
  • B Bowman's capsule
  • C Glomerulus
  • D Malpighian capsule
  • E Renal artery
View Answer & Explanation
Question 13:
Oxygen from the atmosphere reaches the mammalian blood stream through one of the path indicated below. Indicate the correct path, a = mouth, b = trachea, c = bronchiole, d = nostril, e = bronchus, f = alveoli
  • A A → b → e → f → d
  • B B → d → f → e → c
  • C D → b → e → c → f
  • D B → a → f → e → c
  • E F → e → c → d → c
View Answer & Explanation
Question 14:
What is the function of the contractile vacuole in paramecium?
  • A Produces enzymes
  • B Gets rid of excreta
  • C Stores and digest food
  • D Gets rid of excess water
  • E Controls movement
View Answer & Explanation
Question 15:
The functional unit of a mammalian kidney is the
  • A Urethra
  • B Malphigian capsule
  • C Glomerulus
  • D Nephron
  • E Ureter
View Answer & Explanation