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science 8

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Which diagram shows the correct order in a food chain?

D

B

A

C

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The diagram shows a marine food web.At which trophic levels is the cod found?

primary consumer and secondary consumer

secondary consumer only

secondary consumer and tertiary consumer

tertiary consumer only

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What does the term species mean?

a group of organisms that can reproduce to produce fertile o

a group of vertebrates that reproduce sexually

a group of animals that reproduce asexually

all the plants that live in the same area at the same time

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Which two animals show adaptive features for being secondary consumers?

2 and 3

1 and 3

1 and 4

2 and 4

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Which terms describe the position of the fox in this food chain?

B

D

A

C

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A particular animal species only eats plants. What is a description of this animal species?

A carnivore

a secondary consumer

a primary consumer

A producer

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What is a population?

A group of the same species living in the same area

A group of different species living together in an area

All non-living things in an environment

A group of plants and animals interacting

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What does a community in an ecosystem include?

Only the animals in an area

Only the plants in an area

All living organisms in an area

All living and non-living things in an area

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Which of the following best describes an ecosystem?

A group of the same species living together

A community and its physical environment interacting

A group of abiotic factors

All carnivores in a food web

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What role do producers play in a food chain?

They consume other organisms for energy

They convert sunlight into energy through photosynthesis

They break down dead material

They feed on animals only

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Which of the following is a correct statement about a food web?

It is a single path from producer to top predator

It includes many interconnected food chains

It only includes herbivores and carnivores

It shows energy transfer in one direct line

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In a food chain, energy is lost at each level. What is the main reason for this?

Organisms store energy forever

Energy is used for life processes like movement and growth

Consumers gain 100% of the energy from their food

Energy is created at each level

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Which of the following is an example of a population?

A lion, a zebra, and an elephant living in a zoo

All the plants and animals in a rainforest

All the zebras living in a savanna

The soil, water, and rocks in a desert

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Which of the following best defines a decomposer?

An organism that breaks down dead organisms

A predator that hunts prey

An animal that eats plants

A producer that uses sunlight

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What is meant by the term ‘trophic level’?

The total amount of energy in an ecosystem

The type of community in a habitat

The position an organism occupies in a food chain

The number of individuals in a population

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Which statement is true about energy transfer in a food chain?

90% of energy is passed to the next level

Energy increases as you go up the chain

Producers have the least energy

Only 10% of energy is transferred to the next level

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