GRADE 9 – DIGESTIVE SYSTEM WORKSHEET 1
Due Date: Monday 6 MARCH
QUESTION 1: Label the parts of the digestive system
(6)
1
2
3
4
5
6
QUESTION 2: Choose the most correct answer for the following questions
2.1 An organism that can make their own food
a) Autotroph
b) Heterotroph
c) Saprotroph
d) Consumer
(5)
2.2 An organisms that cannot make their own food
a) Autotroph
b) Heterotroph
c) Saprotroph
d) Consumer
2.3 An example of an inorganic nutrient is
a) Carbohydrate
b) Protein
c) Water
d) Lipids
2.4 Fill in the missing words:
The digestive system consists of a number of organs in the body which work
together to break down food. Food passes through the --------------- canal
which extends from the ---------- to the ----------. A number of ------------- organs
assist the process of digestion.
2.5 The process of chewing (mastication) is an example of
a) Chemical digestion
b) Mechanical digestion
2.6 The breakdown of starch in the mouth through enzymes such as salivary
amaylase is
a) Chemical digestion
b) Mechanical digestion
Question 3
3.1.1 List 4 reasons why we need to consume food
(4)
3.1.2 Explain the difference between mechanical and chemical digestion and
mention where in the body each occurs. Tabulate your answer as shown
below:
Mechanical
(4)
Chemical
Where it occurs in the
body
3.1.3 a) What is the alimentary canal?
b) List the organs that make up the canal and distinguish between main
organs and accessory organs.
(3)