Population size Flashcards
1
Q
Define population
A
a group of organisms of one species, living in the same area at the same time
2
Q
State the factors affecting the rate of population
growth for a population of an organism
A
- Competition
- Human/Animals: food, space, predation, diseases
- Plants: light, oxygen, carbon dioxide
3
Q
Lag phase
A
Increases slowly.
- Organisms start to adapt
- Doubling has little effect as numbers are so small
4
Q
Exponential
A
Increases rapidly
- No limiting factor
5
Q
Stationary
A
Remains constant
- Limiting factors because of competition
- Build up of toxic waste
6
Q
Death
A
Decreases
- Death rates > birth rates
