B7- Conpetition Flashcards
What is a habitat?
The place where an organism lives.
Define population in ecological terms.
All the organisms of one species living in a habitat.
What is a community in ecology?
The populations of different species living in a habitat.
What are abiotic factors?
Non-living factors of the environment, e.g. temperature.
What are biotic factors?
Living factors of the environment, e.g. food.
Define an ecosystem.
The interaction of a community of living organisms (biotic) with the non-living (abiotic) parts of their environment.
What do organisms compete for to survive?
Light, space, water, mineral ions, food, territory, and mates.
What is interdependence in an ecosystem?
The reliance of species on each other for food, shelter, pollination, and seed dispersal.
True or False: Changes in an ecosystem can have far-reaching effects.
True.
What happens if a major species is removed from an ecosystem?
It can have far-reaching effects on the ecosystem.
What does a food web illustrate?
What eats what in an ecosystem.
Fill in the blank: Stonefly larvae are particularly sensitive to _______.
pollution.
What effect does the loss of stonefly larvae have on blackfly larvae?
Less competition for algae.
How does the loss of stonefly larvae affect the water spider?
More likely to be eaten by predators.
What is the overall effect on the stickleback population if stonefly larvae are lost?
Decrease in population.
