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Thursday, 02 April 2026
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Biology Past Questions and Answers

Waec Biology Questions

Question 91:
Gaseous exchange takes place in the adult toad through the
  • A Buccal cavity, bladder and lungs
  • B Buccal cavity, skin and lungs
  • C Tympanic membrane, lungs and gills
  • D Buccal cavity, skin and spiracle
  • E Gills skin and buccal cavity
View Answer & Explanation
Question 92:
Breathing movement in mammals is accompanied by regular movements of the diaphragm and the
  • A Intercostal muscles
  • B Vertebral column
  • C Clavicle
  • D Pleural cavity
  • E Floating ribs
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Question 93:
Which of the following are components of glomerular filtrate?
  • A All the components of Blood except mineral salts
  • B Water and salt only
  • C All the components of blood except plasma protein and cells
  • D Plasma proteins, red and white blood cells
  • E Blood cells, amino acid, salts and nitrogenous wastes.
View Answer & Explanation
Question 94:
The mechanism by which useful materials in the glomerular filtrate are taken back into the blood is known
as
  • A Filtration
  • B Reabsorption
  • C Haemolysis
  • D Osmosis
  • E Dialysis
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Question 95:
Which of the following takes place during the process of detoxication in the liver?
  • A Poisonous substances in the body are converted into harmless substances
  • B Fats and oils are broken into finer particles through emulsification
  • C Excess glucose in the blood are converted into glycogen and stored
  • D Worn- out red blood cells are broken down
  • E Enough heat is generated to sustain the activities of the liver
View Answer & Explanation