Ecology Flashcards
What is a Habitat?
The place where an organism lives.
What does Population mean?
All the organisms of one species living in one habitat.
What does Community mean?
The populations of different species living in one habitat.
What is an Abiotic Factor?
Non-living factors of the environment, e.g temperature.
What is a Biotic Factor?
Living factors of the environment, e.g food.
What does Ecosystem mean?
The interaction of a community of living organisms (biotic) with the non-living (abiotic) parts of their environment.
What is Interdependance?
In a community, each species depends on other species for things such as food, shelter, pollination and seed dispersal.
What are 7 Abiotic factors?
1) Moisture level .
2) Light intensity.
3) Temperature.
4) Carbon dioxide level.
5) Wind intensity and direction.
6) Oxygen level.
7) Soil pH and mineral content.
How can an Abiotic factor cause a change in environment?
When one of the factors has increased or decreased.
What are 4 Biotic factors?
1) New predators.
2) New pathogens.
3) Availability of food.
4) Competition (One species may out-compete the other so numbers are too low to breed.)
How can an Biotic factor cause a change in environment?
When there is a new biotic factor introduced.
What do plants need to survive and reproduce?
- Light.
- Space.
- Water.
- Nutrients (mineral ions).
What do animals need to survive and reproduce?
- Space (territory).
- Food.
- Water.
- Mates.
Which structural adaptations do animals that live in colder climates have?
- Thick layer of fat.
- Low surface area to volume ratio to help them retain heat.
Which structural adaptations do animals that live in hotter climates have?
- Thin layer of fat.
- Large surface area to volume ratio.
