WAEC Biology 2025 Theory — Question 5
Question 5 of 21 from the West African Examinations Council (WAEC) Biology 2025 Theory paper, with the correct answer and a full explanation.
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2(a) State two differences between photosynthetic mode of nutrition and chemosynthetic mode of nutrition.
Model answer
Photosynthetic nutrition: Requires sunlight; Uses chlorophyll; Occurs in plants; Produces oxygen. Chemosynthetic nutrition: Does not require sunlight; Uses chemical energy from inorganic substances; Occurs in some bacteria; Does not produce oxygen. (Any two contrasting points.)
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