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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.
Flg, B-l
(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
ot"ffi."ntFtg.i.2
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.
tF-'flL'tl,l
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