NAME: __________________________________
PATHWAY 2
HUMAN AND SOCIAL BIOLOGY WORKSHEET GRADED ACTIVITY
1. Figure 1 shows a diagram of part of a food chain.
I.
State what the arrows labeled A in the diagram represent
.....................................................................................................................................(1 mark)
II.
State what is occurring at the arrow labeled B. in figure 1
.................................................................................................................................... (1 mark)
III.
Identify the organism that is the primary consumer and the organism that is the producer in
the food chain above.
Primary consumer............................................................................................
Producer........................................................................................................
2(marks)
2. Using the organisms and their food sources below construct a simple food web, in the space
provided
Organism
Food eaten
caterpillar
Plant leaves, grass
Fruit fly
Mango fruit
lizard
Fruit fly and caterpillar
pigeon
lizard and fruit fly
. (4 marks)
3. Complete the below of food nutrients/ Mineral sources and their deficiency diseases.
Nutrients/ Mineral
Sources
Vitamin A
Function
diseases
To build membranes
and aids in vision
Carbohydrates
Shell fish and salt
goiter
Food from animals
and legumes
Scurvy
13 marks
State 2 diseases where consuming excess of nutrients may arise.
................................................................................................................................. 2marks