Biology unit 4 things to know AQA 4.0 / 5 based on 1 rating ? BiologyA2/A-levelAQA Created by: EmmaCreated on: 22-11-12 11:11 Biomass Measure of the amount of energy in a trophic level (stages in a food chain), based on the mass of an organism in an ecosystem. 1 of 11 Community all the different organisms living and interacting in a certain environment 2 of 11 Niche How an organism fits into all the biotic and abiotic aspects of their environment. 3 of 11 Ecosystem Biotic and Abiotic factors of their environment 4 of 11 Habitat Where an organism lives 5 of 11 Population A group of interbreeding organisms of the same species, within a habitat. 6 of 11 Succession Process by which the species inhabiting the ecosystems change over time due to altering biotic and abiotic factors. 7 of 11 Co-dominance When multiple alleles are expressed due to neither being recessive/dominant over the other. 8 of 11 Genotype alleles of an organism 9 of 11 Phenotype Visual characteristics expressed by the genotype. 10 of 11 Speciation The development of a new species. 11 of 11
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