Ecosystems Flashcards

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1
Q

Habitat

A

The place where an organism lives.

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2
Q

Population

A

All the members of one species living in a habitat.

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3
Q

Community

A

All the plants, animals and microorganisms living in a habitat.

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4
Q

Species

A

A group of organisms that can interbreed to produce fertile offspring.

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5
Q

Producer

A

A green plant that uses sunlight to make its own food (chemical energy) by photosynthesis.

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6
Q

Consumer

A

An organism that cannot produce its own food, it gains energy by eating another organism (plant or animal).

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7
Q

Omnivore

A

An organism that eats a mixture of plant and animal material.

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8
Q

Carnivore

A

An organism that eats animal material only.

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9
Q

Herbivore

A

An organism that eats plant material only.

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10
Q

Predator

A

An animal which hunts and kills other animals for food.

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11
Q

Prey

A

An animal which is hunted and killed for food by another animal.

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12
Q

Food web

A

A diagram which shows interconnected food chains.

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13
Q

Food chain

A

A diagram which shows the transfer of energy between organisms.

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14
Q

Biodiversity

A

The number, abundance and variety of species.

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15
Q

Ecosystem

A

Made up of all the organisms (the community) living in a particular habitat and the non-living parts with which the organisms interact. (Ecosystem = habitat + community)

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16
Q

Niche

A

A niche is the role that an organism plays within a community.

17
Q

Indicator species

A

A species that by its presence or absence shows the environmental quality/levels of pollution of an area.

18
Q

Mutagenic agent

A

A substance or environmental factor that can increase the rate of mutation.

19
Q

Examples of isolation barriers

A

pH, oceans, mountains and breeding calls