3 marksFoundation
A food chain on a farm is: grass → rabbit → fox.
.1What is the grass in this food chain?
[1 mark] .2What do the arrows in a food chain show?
[1 mark] .3In a stable community, what usually happens to the fox population after the rabbit population increases?
[1 mark] 4 marksFoundation
Diseases can be communicable or non-communicable.
.1Which two diseases are non-communicable? Tick two boxes.
[2 marks] .2What is a carcinogen?
[1 mark] .3Drinking large amounts of alcohol over many years is a risk factor for disease in one organ in particular.
Name this organ.
[1 mark] 4 marksFoundation
Pathogens are microorganisms that cause infectious disease.
.1Which type of pathogen causes measles?
[1 mark] .2How is measles spread from person to person?
[1 mark] .3Which two actions reduce the spread of salmonella food poisoning? Tick two boxes.
[2 marks] 4 marksFoundation
Differences in the characteristics of individuals in a population are called variation.
.1Which two characteristics are caused only by the genes a person inherits? Tick two boxes.
[2 marks] .2What is a mutation?
[1 mark] .3Name the process by which organisms best suited to their environment are more likely to survive and breed.
[1 mark] 3 marksFoundation
The distribution of organisms in a habitat depends on abiotic and biotic factors.
.1Which two are abiotic factors? Tick two boxes.
[2 marks] .2Which resource do plants in a community compete for?
[1 mark] 