Question

1(a)(i) Complete the table below with the respiratory surface of each of the listed organisms: Tadpole (2 days old); Cockroach; Domestic fowl; Talinum; Earthworm; Amoeba. (ii) State five characteristic features of respiratory surfaces in organisms. (b) Make a drawing, 4cm to 6cm long of the respiratory organ in Tilapia and label fully.

Accepted Answer

(a)(i) Respiratory surface table: Tadpole (2 days old) - External gill. Cockroach - Tracheal system. Domestic fowl - Lungs. Talinum - Stomata. Earthworm - Body surface. Amoeba - Body surface.
(ii) Characteristic features of respiratory surfaces in organisms (any five): They have large surface area; They are thin; They are highly vascularized; They are moist; They are permeable.
(b) [Drawing: labelled diagram of the respiratory organ (gills) in Tilapia, showing the oral cavity, buccal cavity, pharyngeal cavity, gills, branchial cavity, stomach, air-breathing organ/lung, and intestine, as relevant to the fish's respiratory and digestive structures.]

WAEC Biology 2019 Theory — Question 1

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