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Leaving certificate biology
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Unit 1Ecology theory5 Topics|1 Quiz
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Nutrient recycling4 Topics|1 Quiz
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Ecological relationships and population dynamics2 Topics
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Human impact on the ecosystem2 Topics
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Study of a grassland ecosystem3 Topics
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Responses in the Flowering Plant4 Topics|1 Quiz
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Unit 3Sexual reproduction in the flowering plant1 Topic
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The human reproductive system3 Topics
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The menstrual cycle2 Topics
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Pregnancy2 Topics
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The circulatory system4 Topics
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Blood5 Topics
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The heart5 Topics
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Lesson 1, Topic 1
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Definitions
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Ecology
The study of the relationships of living organisms with each other and with their abiotic environment
Habitat
The place where an organism lives
Community
A group of different species sharing the resources in an ecosystem
Population
All of the members of the same species living in an ecosystem
Ecosystem
Living organisms and their abiotic environment . Examples :grassland , woodland, rocky sea shore and bog.
Biosphere
The part of the Earth where organisms can live
Niche
The role of an organism in an ecosystem
It might be the activity period that one species has, say a morning feeder, that separates it from competition of another species, say an evening feeder.
Example 1:
Owls and red-tailed hawks live in the same habitat but owls hunt for mice at night and hawks hunt for mice during the day
Example 2:
Each of these birds live in the same habitat but each feed in a different way and therefore are not competing for the same food
