Biology A2 Unit 4 Topic 5 On The Wild Side

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Define species.
A species is a group of organisms that are able to reproduce together to produce fertile, living offspring.
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Define population.
A group of the same species which occupy the same habitat at the same time.
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Define habitat.
Where an organism live within an ecosystem.
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Define ecosystem.
The interaction of biotic and abiotic factors in an environment.
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Define community.
A group of plant, animal and/or microbes which occupy the same habitat at the same time.
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Define environment.
The biotic and abiotic factors in a habitat.
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What is a niche?
The role of an organism in an ecosystem and the way it responds to environmental factors.
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What determines which species live in a habitat?
Only species that are adapted to live in that habitat can survive there so they live there.
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Define biotic factors.
Living factors affecting the organism.
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List 5 biotic factors.
Food Availability, Predator/Prey relationships, Parasites, Competition, Breeding partners.
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What are biotic factors dependent on?
Density of populations in the habitat.
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Define abiotic factors.
Non-living factors affecting organisms.
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List 5 abiotic factors.
Soil pH, Oxygen availability, Climate, Topography, Light availability, Natural disasters, Pollution.
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What is the difference between interspecific competition and intraspecific competition?
Interspecific is between members of different species and Intraspecific is between those of the same species.
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Define species richness.
The number of different species in a certain habitat.
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Define species eveness.
The number of individuals within each species in a certain habitat.
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What are the two types of species distribution?
Uniformly distributed where there is no pattern as to how the species are placed. Systematically distributed where there is a clear change in distribution.
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Other cards in this set

Card 2

Front

Define population.

Back

A group of the same species which occupy the same habitat at the same time.

Card 3

Front

Define habitat.

Back

Preview of the front of card 3

Card 4

Front

Define ecosystem.

Back

Preview of the front of card 4

Card 5

Front

Define community.

Back

Preview of the front of card 5
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