Interdependence within ecosystems | Science | Quizalize & Oak National Academy

Starter quiz

True or false? A food chain shows the transfer of biomass.
- True ✓
- False
Which of the following are biotic factors?
- water
- plants ✓
- oxygen
- invertebrates ✓
- fungi ✓
What do plants and animals need from their habitat?
- light
- carbon dioxide
- space ✓
- water ✓
- food ✓
Organisms that consume other organisms are known as ...
- 'consumers' ✓
What will happen if the cabbage population decreases?
- there will be more caterpillars
- there will be less caterpillars ✓
- there will be less lavender ✓
- there will be more lavender
What will happen to the population of hawks if the grass population decreases?
- the hawk population will decrease ✓
- the hawk population will increase
- the hawk population will stay the same

An ______ is made up of all the living organisms in a place, interacting with each other and their non-living surroundings.
- 'ecosystem' ✓
Which organism is a producer?
- organism A ✓
- organism B
- organism C
- organism D
Which of the following is a decomposer?
- dead leaves
- earthworm ✓
- hedgehog
- fox
Which of the following are correct?
- Decomposers make food.
- All organisms rely on consumers for food.
- All food chains start with a consumer.
- Organisms that feed on dead organisms or waste materials are called decomposers. ✓
- Energy is used for life processes. ✓
True or false? Bacteria and fungi are decomposers.
- True ✓
- False
All organisms within an ecosystem are ______ because they depend upon each other for the things they need to survive.
- 'interdependent' ✓

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Ecosystems are made up of a community of organisms that interact with each other and their non-living surroundings.
Organisms in an ecosystem are interdependent because they depend upon each other for the things they need to survive.
All organisms depend upon producers to make the food that moves through food chains.
Dead organisms and remains of living organisms provide food for other organisms.
All living organisms depend upon decomposers that break down dead organisms and recycle useful substances for reuse.

It is common to think that organisms, especially humans, can survive without other organisms.

This lesson highlights and explores the key concept that all living organisms are dependent upon other organisms for their survival.

Ecosystem - An ecosystem is made up of all the living organisms in a place, interacting with each other and their non-living surroundings.
Interdependent - All organisms within an ecosystem are interdependent because they depend upon each other for the things they need to survive.
Producer - A producer is an organism that makes its own food.
Cellular respiration - Cellular respiration is a chemical process where food is used as a fuel to provide energy for life processes.
Decomposer - A decomposer is an organism that feeds on the remains of other living organisms.