topic 7 genetics, populations evolution and ecosystems
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54 Terms
what is a species
organisms that can interbreed to form fertile offspring
what is population
group of the same species in the same area
what is a community
populations of different species in the same area
what is an ecosystem
the community and non living aspects
what is a habitat
small part of the ecosystem where a population lives
what are biotic factors
other species competing for resources
other species that cause disease or are parasites
other species used for food
other species that are predators
what is a niche
species role in the community
what is interspecific competition
competition between different species
what is intraspecific competition
competition within a species
what is carrying capacity
maximum stable population size which can be supported by an ecosystem
how can you estimate the size of a population in a stable environment
divide area into a grid, assign coordinates to the area using random number generator, count number of species in each quadrat. repeat many times for representative sample and calculate mean