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Leaving certificate biology

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  1. Ecology theory
    5 Topics
    |
    1 Quiz
  2. Unit 1
    Nutrient recycling
    4 Topics
    |
    1 Quiz
  3. Ecological relationships and population dynamics
    2 Topics
  4. Human impact on the ecosystem
    2 Topics
  5. Study of a grassland ecosystem
    3 Topics
  6. Responses in the Flowering Plant
    4 Topics
    |
    1 Quiz
  7. Unit 3
    Sexual reproduction in the flowering plant
    1 Topic
  8. The human reproductive system
    3 Topics
  9. The menstrual cycle
    2 Topics
  10. Pregnancy
    2 Topics
  11. The circulatory system
    4 Topics
  12. Blood
    5 Topics
  13. The heart
    5 Topics
Leaving certificate biology Ecology theory Definitions
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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

Topic quiz