WAEC Biology 2019 Objective — Question 3

Question 3 of 50 from the West African Examinations Council (WAEC) Biology 2019 Objective paper, with the correct answer and a full explanation.

A structural similarity between Paramecium and Amoeba is the presence of

A. one food vacuole
B. two contractile vacuolesCorrect
C. two nuclei
D. one gullet

Explanation

Paramecium has two of each of food vacuole, contractile vacuole and nucleus, while Amoeba has only one of each of these organelles; thus, the presence of two contractile vacuoles is a similarity noted here as they both possess contractile vacuoles (with Amoeba having one and Paramecium two) - the structural feature common to both is the possession of contractile vacuole(s).

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