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- 1. Fill in the Blank
In nearly all food chains the energy originates from the .........
- 2. Fill in the Blank
What type of organisms are producers in a food chain?
- 3. Fill in the Blank
What process to producers do that creates energy containing molecules such as glucose?
- 4. Multiple Choice
Which level of the food chain consists of herbivores?
producers
primary consumers
secondary consumers
decomposers
- 5. Fill in the Blank
Name the snake's trophic level in this food chain?
- 6. Multiple Choice
Dry biomass is a more useful measurement than wet biomass because:
Organisms contain lots of water.
Water can be excreted by an organism.
Body water does not contain energy that can be passed up the food chain.
Water is not passed up the food chain.
- 7. Fill in the Blank
On average, what percentage of energy is lost at each level of a food chain?
- 8. Multiple Choice
Which of these are sources of energy loss from a food chain? Select all correct answers.
Photosynthesis
Respiration
Decomposition
Excretion
Digestion
- 9. Multiple Choice
Which level of a food chain would contain the least amount of dry biomass?
Apex predator
Decomposers
Producers
Primary consumers
- 10. Multiple Choice
Measuring the biomass at each trophic level in a food chain is useful because:
It tells you how many organisms are in each level
It tells you the size of the organisms in each level
It is an indicator of the energy contained in each trophic level
It indicates how fast a population is growing
- 11. Multiple Choice
The arrows in a food web show:
Who eats who
The transfer of energy between organisms
Energy loss
Hierarchy of body size
- 12. Fill in the Blank
Imagine that a food chain exists on one tree. If the tree contains 100,000 calories how many calories would you expect to be contained in the tertiary consumers?
- 13. Multiple Choice
Each level of a food chain is known as a:
Tertiary level
Phylum level
Trophic level
Feeding level
Link
- 14. Multiple Choice
Cows and insects can both be primary consumers. Why would cows cause more energy to be lost from a food chain than insects. Choose the best answer.
Cows are bigger
Cows produce more faeces
Cows generate body heat, insects don't
Cows like to dance
- 15. Multiple Choice
A vegetarian diet allows for a more energy efficient food chain than an omnivorous diet.
True
False
- 16. Multiple Choice
Battery farmed chickens need less food to grow to the same size as free range chickens.
True
False
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