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45Topic 5 - ANIMAL NUTRITION - PART 3(Mechanical and Physical Digestion)

Section A: ilultiple Choice Questions [3 marke]

1. Which of the following describes the function of the inclsor tooth of humans?

2. The diagram shows some food moving through the digestive system.

A Chewing foodB Cutting food

C Grinding foodD Tearing food

C lngestionD Peristalsis

Which process is shown?

A DiffusionB Digestion

3. The diagram shows some food moving along the alimentary canal by peristalsis.

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What are the muscles in the wall of the alimentary canal doing at point X?

Circular mugcle Longitudinal muecleABcD

contractingcontracting

relaxingrelaxing

contractingrelaxing

contractingrelaxing

Topic 5 - Animal Nutrition - Part 3 Page I of4

Section B: Structured Questions

1. (a) List the types and number of teeth in the upper iaw of an adult human with a full set of teeth' [81

Type of teeth Number of teeth

(b) State the FUNCTION of each type of tooth. [81

Type of teeth Function

2. Give Ttltl0 advantages of chewing food well before swallowing? [2t

3. (a) What TWO nutrients are needed to build strong, healthy teeth? [21

(b) Explain why sugary foods are bad for your teeth. [11

(c) Describe three ways by which you can look after your teeth. [3J

Topic 5 - Animal Nutrition * Part 2 Page 2 of4

Fig. 6.1 shours the human alimentary canal.

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(b) A person eats some bread.State TWO effects of saliva on the bread. [2]

1.

Name the parts labeled. [41

A

(a)

B

c

D

(c) Fig. 6.2 shows some of the bread as it moves down part of the alimentary canal.XY

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Name the process that causes the movement.

State what the muscles of the intestine are doing at point X and at point Y. [2]XY

(i)

(i i)

llI

Topic 5 - Animal Nutrition -Part2 Page 3 of4

ih.r-5. Fig.3.1 $hows side views of human teeth.

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State the FUNCTION of each of the tooth shown above. [21

Tooth A -

Tooth B -

(b) Explain the part played by teeth in digestion. [{l

B

( i ) State THREE causes of dental decay. [31

1.

2.

3.

7. A student eats a piece of brcad. While the bread'is:in hermouth, state the FUNCTIONof her: ffi

(i) tongue,

(ii) teeth,

(iii) saliva,

Topic 5 - Auimal Nutrition - Part 2 Page 4 of4