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The document discusses the components of a small ecosystem, specifically a bottle garden, detailing its biotic (plants and organisms) and abiotic (soil, water, light, air) parts. It also addresses common misconceptions about food chains and interdependence, correcting mistakes related to the roles of producers, consumers, and decomposers. Additionally, it explains how decomposers recycle nutrients back into the ecosystem.

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53 views2 pages

Worksheet Answers

The document discusses the components of a small ecosystem, specifically a bottle garden, detailing its biotic (plants and organisms) and abiotic (soil, water, light, air) parts. It also addresses common misconceptions about food chains and interdependence, correcting mistakes related to the roles of producers, consumers, and decomposers. Additionally, it explains how decomposers recycle nutrients back into the ecosystem.

Uploaded by

Viktoria
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Answers Worksheet

Interdependence within ecosystems

Task A: Ecosystems

Look at the bottle garden.

This is an example of a small ecosystem.

Describe the living (biotic) and non-living (abiotic) parts of this


ecosystem.

The bottle garden ecosystem is made up of:

Living (biotic) parts

● These are different species of plants growing in the ecosystem. a bottle garden
● There may also be other organisms living in the soil or on the
plants.

Non-living (abiotic) parts include:

● The different types of soil/ rocks in the bottle.


● The amount of water/ moisture in the bottle.
● The light (where the bottle garden is, some parts get more light than others).
● The air in the bottle garden.

Task B: Examples of interdependence: Food


Lucas has written some notes about why food is important but he has made some mistakes.

Each line of his notes contains one mistake.

Identify the mistakes and rewrite his notes:

● Some All living organisms need food.


● All organisms rely on consumers producers for food.
● Excretion Respiration is the life process that uses food to provide energy.
● This is a physical chemical reaction.
● The energy is used for other life processes such as growth, reproduction and walking
movement.
● Organisms that feed on dead organisms or waste materials are called producers
decomposers.

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Answers Interdependence within ecosystems Worksheet

Task C: Examples of interdependence: Recycling


Jacob is confused.

His teacher has told him that the cow that died
has been broken down by decomposers.

I know that producers always start


a food chain diagram, but the
decomposers are eating an animal.
Surely this food chain begins with a
The skeleton is all that
consumer?
remains of this dead cow.
Jacob

Explain to Jacob how he is wrong and draw the food chain diagram which includes the
decomposer.

The food chain diagram is: grass → cow → decomposer

● The food chain still begins with a producer.

● The cow got its food from the grass.

● The decomposer is a consumer and feeds on another consumer (the dead cow).

● The decomposer is returning some of the chemicals in the body of the cow back to the soil
for other producers to use.

© Oak National Academy 2024. Produced in partnership with University of York Science Education Group.
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Licensed on the Open Government Licence v3.0, except where otherwise stated. See Oak terms & conditions.

v2.3

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