Food Chains - exam practice
Food Chains
Question 1 of 3
The diagram below shows a food chain comprising corn, mice and falcons.
Which trophic level is the falcon?
The corn is a producer.
What is meant by the term producer?
What is the source of energy for the food chain?
Some of the mouse biomass does not become part of the falcon biomass.
Which of the following is a valid reason for this loss of biomass?
Food chains illustrate the passage of food (or energy) from one organism to another.
The diagram below shows a typical freshwater food chain.
algae → stickleback → trout → osprey
Name the process carried out by the algae that allows energy to enter the food chain.
Name the secondary consumer in the food chain above.
In food chains, biomass is lost between different trophic levels.
One reason for this is the release of undigested food from the body.
What is the release of undigested food called?
The diagram below shows a food web.
State the number of primary consumers in this food web.
State the number of food chains in this food web.
The mountain lion catches and eats its prey.
Give the name used to describe the lion in this food web.
A pesticide can be used to kill the grasshoppers in this habitat.
Describe the effect that killing grasshoppers would have on:
- the number of grass plants
- the number of mice