B4.1.1 Flashcards

1
Q

What is an ecosystem made up of

A

All the living and physical conditions in an area

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2
Q

What is a community

A

The organisms within the ecosystem

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3
Q

What is a habitat

A

The area which they live in

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4
Q

What is the population

A

The total number of organisms of each species

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5
Q

What are producers

A

Organisms that make their own food through photosynthesis. This includes all plants and algae.

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6
Q

What are consumers

A

Organisms that can’t make their own food. They have to eat others to gain energy.

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7
Q

What are decomposers

A

Gain energy by feeding on dead decaying matter

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8
Q

Where does energy originate from

A

The energy originates from the sun which is transferred by light to chlorophyll in cells of a producer.

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9
Q

What can the glucose produced in photosynthesis be used for

A

It can be converted into protein, fat and carbohydrates used for growth and repair.

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10
Q

What happens as an organism grows

A

It increases its biomass.

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11
Q

What’s biomass

A

The mass of living material that is present.

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12
Q

What do food chains show

A

They show what organisms eat

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13
Q

What do the arrows show

A

Arrows show the flow of biomass and therefore energy transfer.

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14
Q

What is each step in a food chain

A

It’s a trophic level.

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15
Q

What are food webs

A

A series of interlinked food chains.

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