Term 2 Flashcards
What is an ecology relationship?
Ecology relationships involve interactions with the physical world as well as interrelationships with other species and individuals of the same species.
What are the levels of living organisms?
From least to most complex:
- Individual
- Population
- Community
- Ecosystem
- Biome
- Biosphere
What is the biosphere?
The biosphere is the region within which all living things are found on earth.
What are biomes?
Biomes are the largest geographical based biotic communities conveniently recognised. Biomes within the same category have specific characteristic features.
What are the components of an ecosystem?
A biome is a large geographical region compromising of natural units called ecosystems. An ecosystem encompasses the physical environment and the community.
What is ecology?
Ecology us the study of the relationships between organisms and their physical and biotic environment.
What is an ecosystem?
An ecosystem includes all of the organisms (the community) and their physical environment.
What is a biotic and what is an abiotic?
A biotic factor is something living and an abiotic factor is something non living.
What is a community?
A community is a naturally occurring group of organisms living together as an ecological entity; the biological part of the ecosystem.
What is a population?
Organisms do not generally live alone. A population is a group of organisms from the same species by occupying in the same geographical area.
What is a habitat?
An organisms habitat is the physical place or environment in which it lives. Organisms show a preference for a particular habitat type, but some are more specific in their requirements.
What is the law of tolerance?
The law of tolerance states that ‘for each abiotic factor, an organism has a range of tolerances within which it can survive’.
What is the habitat range?
An organisms habitat is not always of a single type. Some organisms occupy a range of habitats.
What is a rocky shore environment and what are its 4 factors?
Rocky shore environments typically exhibit marked physical gradients as a result of tidal movements. Horizontal and vertical gradients in salinity, temperature, dissolved oxygen and exposure time are reflected in the communities found at different positions on the shore.
What are the horizontal and vertical gradients?
Horizontal: From the low tide to the high tide marks.
Vertical: From the op bottom to top surfaces of rocks and boulders.
