Ecosystem

The living factors of an environment is called

• abiotic

• ecosystem

• biotic

• ecology

When living and non-living components of an environment interact which each other it is termed as one of the following:

• Ecology

• Biology

• Ecosystem

• Biomes

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Which one of the following is an example of abiotic factor?

• air

• predator

• prey

• caterpillar

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Name the source of energy shown in this diagram.

• Crocodile

• decomposers

• Herbivores

• Sun

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Decay and decomposition takes place in all ecosystem to return the nutrients back into the soil or water etc.

Name one decomposer from a forest ecosystem.

• Hawk

• Vultures

• wild boar

• Fungi and bacteria

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In Australia our marine ecosystem is under threat from one of the following pollutants. Which one?

• Plastic bags, straws and bottles

• Fertilizers running off from farm into rivers and sea

• Overuse of weedicides

• Oil spills

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Select from the list below a primary consumer.

shark, sheep, plants, caterpillar

• caterpillar

• sheep

• shark

• plants

Jack complained to a forest ranger that the population of Koala bears have been very much reduced due to bush fires. This means the koalas are:

• Endangered

• about to become extinct

• dying out from natural causes

• over-hunted for their skin

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Many small fish in marine ecosystem mimic the colour of their environment. They do this to:

• Scare their enemies off

• get attention from other fish

• attract other fish for mating

• protect themselves from their enemies

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Star fish has large number of whip like stinging tentacles. What kind of adaptation is this?

• Physiological

• behavioural

• structural

• none of the above