Competition and Interdependence

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Define a habitat.

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22 Terms

1

Define a habitat.

A habitat is the environment in which an organism lives.

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2

Elephants live in grasslands, which makes the grasslands their what?

Their habitat

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3

Define a population.

A population is the total number of organisms of the same species living in the same geographical area.

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4

Thousands of elephants live in the grasslands of Africa. What is this called?

A population

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5

Define a community.

A community is the population of all the different species that live in the same habitat.

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6

The African grasslands contain lots of different species such as giraffes, zebras and gazelles. What is this called?

A community

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7

What does the word biotic mean?

The word biotic means living.

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8

What are the living parts of an environment called?

The living parts of an environment are called biotic parts.

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9

What does the word abiotic mean?

The word abiotic means non-living.

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10

What are the non-living parts of an environment called?

The non-living parts of an environment are called abiotic parts.

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11

Give two examples of abiotic parts of an environment.

  • Water

  • Minerals from the soil

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12

Define an ecosystem.

An ecosystem is both the biotic and the abiotic parts of an environment and how they interact.

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13

Why do organisms complete with each other?

Organisms compete with each other because the resources that they need are often short in supply.

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14

What do plants compete for?

  • Light

  • Space

  • Water

  • Mineral ions in the soil

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15

What do animals compete for?

  • Food

  • Water

  • Mating partners

  • Territory

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16

Define interdependence.

Interdependence means that every animal depends on other living organisms for food.

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17

Give an example of how plants depend on animals.

Plants depend on bees to spread their pollen for fertilisation.

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18

Give two examples of animals depending on plants to survive.

  • Bees depend on pollen produced by plants for their food.

  • Zebras and gazelles depend on grass and shrubs for their food.

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19

Give an example of animals depending on other animals to survive.

Lions depend on zebras and gazelles for their food.

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20

What happens if a species went extinct from a community?

If a species went extinct from a community then it will affect the whole community.

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21

Describe what would happen to a whole community if bees went extinct.

If bees went extinct,

  • Lots of plant would not get pollenated so they won’t be able to reproduce.

  • Animals which feed on these plants will run out of food so their population would fall.

  • Animals which feed on these animals will run out of food as well so their population will fall too.

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22

Define a stable community.

A stable community is when the population of organisms are in balance with each other and with the abiotic resources such as water.

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