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WAEC Biology 2015 Theory — Question 16

Question 16 of 19 from the West African Examinations Council (WAEC) Biology 2015 Theory paper, with the correct answer and a full explanation.

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5(c)(i). What is Estuarine habitat? (ii) Construct a food chain typical of an estuarine habitat.

Model answer

(i) An estuarine habitat is a point where a big river enters the ocean/sea. The salt water from the ocean mixes with the fresh water from the river to form an intermediate body of water known as brackish water. (ii) A typical estuarine food chain: photoplankton → barnacles → fish → bird.

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