4.7.1.1 Communities Flashcards
1
Q
What are the levels of organisation in an ecosystem?
A
- individual organisms
- habitat within a population
- many populations which create communities
- whole ecosystem
2
Q
What is the importance of competition?
A
- species need to compete for resources needed to survive
3
Q
What is the importance of interdependence?
A
- species will depend on each other for certain factors that are competed for to survive
4
Q
What is a habitat?
A
- where an organism lives
5
Q
What is a population?
A
- all organisms of one species living in a habitat
6
Q
What is a community?
A
- populations of different organisms living in a habitat
7
Q
What is an ecosystem?
A
- interaction of a community of biotic organisms and abiotic parts of their environment
8
Q
Why do organisms require a supply of materials from their surroundings and other organisms?
A
- survival
- reproduction
9
Q
What do plants in a community or habitat compete for?
A
- light
- space
- water
- mineral ions
10
Q
What do animals in a community or habitat compete for?
A
- food
- water
- mates
- territory
11
Q
What do species within a community depend on each other for (interdependence)
A
- food
- shelter
- pollination
- seed dispersal
12
Q
What happens if on species is removed?
A
- can affect the whole community
13
Q
What is a stable community?
A
- all species and environmental factors are in balance so population sizes remain constant
