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42 Cards in this Set
- Front
- Back
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Diversity
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difference in characteristics among living things
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Biological diversity
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different kinds of life on earth of the total number of species on earth.
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Species
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organism with unique adaptations that is reproductivly isolated.
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Population
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Members of a species that are living in the same area and sharing resources
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Community
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Populations of different species in a common area
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Niche
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combination of an organisms habitat and its habits
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Recourse partitioning
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different species exist in the same area, but they have slightly different niches so they can divide resources
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Abiotic
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non living things
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Biotic
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living things
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Genetic engineering
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intentional altering of DNA of an organism or population
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DNA
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DioxyriboNucleicAcid
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Transgenic
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genetically modified arganism
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Biotechnologies
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Use of living things to make agricultural, industrial, or medical products
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Competition
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When an organism needs the same resource as another and there may not be enough
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Structural/behavioral adaptation
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changing behavior or developing physical characteristics to help adapt to surroundings
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Artifical/Natural selection
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selecting breeders with desired traits vs. laeving it up to nature
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Sekective breeding
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breeding certain organisms with certain organsims to get a certain offspring
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Broad/Narrow niche
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a verifying or selective set of habits and habitat
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Seed banks
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the seeds in soil within an area
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Protected areas
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areas receiving special protection to censerve life
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Speciation
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When new species are formed through evolution
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Zoospores
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spore capable of independant motion
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Generalist/Specialist
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Someone with skills or knowledge in many areas vs. someone who specializes in a specific area
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Diversity index
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Statistic measuring biological within an ecosystem.
Calculations: # of different types/total # of specimens. If the diversity is below 0.5 it is poor |
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Sexual reproduction
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reproduction involving the exchange of genetic material between towo individuals resulting in offspring that is genetically different from the parents
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Zygospores
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thick walled reproductive spore formed by 2 cells
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Bacterial Conjugation
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transfer of genetic material between bacteria through cell to cell contact
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Zygote
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fertilized egg
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Specialization
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adaptation of an organism to a specific function in response to the environment
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Symbiotic
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relating between two different species
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ovule
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sac containing female reproductive cells of a plant
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pollen tube
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tube containing and transporting pollen in a flower
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embryo
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undevelopedorganism in beginning stages
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Cotyledon
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first leaf produced by a flower seed
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Genetics
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study of how heritable characteristics are transmitted through generations of an organism
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Continuous variation
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variation in a heritable characeristic that fallswithin a range, such as height
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Discrete varitaion
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variations in a heritable characteristic that has either or form such as being able to roll your tongue
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Dominant/Recessive
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traits are the same in offspring vs. traits may or may not be the same in offspring
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Mutation
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A random hange in a geene resulting in a new heritable trait
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Mutagen
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an external agent that increases the rate of mutation (radiation, chemicals)
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DNA
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genetic material found mainly in the nuclei of cells of living things
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Chromosome
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a structure in which DNA is arranged and along which genes are located
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