Bio Vocab
Published on Nov 20, 2015
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PRESENTATION OUTLINE
BIOSPHERE
- Definition: All the communities on earth whose members exist in air, water, and on land.
- Example:A lake or a forest.
COMMENSALISM
- Definition: A symbiotic relationship between two species in which one species is benefited and the other is neither benefited nor harmed.
- Example: Small fish swim next to sharks to eat their scraps.
BIOTIC POTENTIAL
- Definition: The highest possible per capita rate of increase for a population.
- Example: A mouse has a greater biotic potential than an elephant.
COMPETITIVE EXCLUSIVE PRINCIPLE
- Definition: Principle that says that no two species can occupy the same ecological niche at the same time if resources are limiting.
- Example:The Red Squirrel (Sciurus vulgaris) is native to Britain but its population has declined due to competitive exclusion, disease and the disappearance of hazel coppices and mature conifer forests in lowland Britain.
ECOSYSTEM
- Definition: A community and its physical environment, including both living (biotic) and nonliving (abiotic) components.
- Example:
NICHE
- Definition: The role an organism plays in a community, including its habitat and its interactions with other organisms.
- Example: A garden spider is a predator that hunts for prey among plants, while an oak tree grows to dominate a forest canopy, turning sunlight into food.
HETEROTROPH
- Definition: Consumers that need a performed source of organic nutrients.
- Example: Deer or Elephants.
TROPHIC LEVEL
- Definition: Is composed of all the organisms that feed at a particular link in the food chain.
BIOMASS
- Definition: The number of organisms multiplied by their weight.
AUTOTROPH
- Definition:Producers that require only inorganic nutrients and an outside energy source to produce organic nutrients for their own use and for all the other members of a community.
- Example: A tomato plant or flowers.
