Biology 0610 · IGCSE · Digestive system

Digestive system — practice question

Fig. 5.1 illustrates the various types of human teeth.
(a)[2]

Describe the roles of the canine and molar teeth.

(b(i))[2]

State two differences between the teeth of a tiger and the teeth of a rabbit, using evidence from Fig. 5.2.

(b(ii))[1]

Suggest one visible feature in Fig. 5.2 that shows the tiger is a carnivore.

(c(i))[2]

Calculate the number of molars as a percentage of the total number of teeth for mammal 1. Show your working. Give your answer to the nearest whole number.

(c(ii))[4]

Discuss the evidence in Table 5.1 both for and against classifying mammal X as a carnivore.

(d)[3]

Explain why a low pH in the stomach is important.

(e)[3]

Explain how villi are adapted for absorption.

(f)[3]

Suggest possible effects on the body of a reduction in the absorption of nutrients.

Worked solution & mark scheme

This 20-mark question has a full step-by-step worked solution and mark scheme. One marking point: Canine - used for piercing/tearing food

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