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| a category of related classes within a phylum. |
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| a system formed by the interaction of a community of organisms with their environment |
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| the usual major subdivision of a family or subfamily in the classification of organisms, usually consisting of more than one species |
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| the process by which forms of life having traits that better enable them to adapt to specific environmental pressures, as predators, changes in climate, or competition for food or mates, will tend to survive and reproduce in greater numbers than others of their kind, thus ensuring the perpetuation of those favorable traits in succeeding generations |
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| the amount of one species in an habitat |
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| a relationship between two species of organisms in which both benefit from the association |
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| the primary subdivision of a taxonomic kingdom, grouping together all classes of organisms that have the same body plan |
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| an organism, usually an animal, that feeds on plants or other animals |
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| an organism, usually a bacterium or fungus, that breaks down the cells of dead plants and animals into simpler substances |
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| the living together of two dissimilar organisms, as in mutualism, commensalism, amensalism, or parasitism |
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| a key for the identification of organisms based on a series of choices between alternative characters |
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| change in the gene pool of a population from generation to generation by such processes as mutation, natural selection, and genetic drift |
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the variety of species and
ecosystems on Earth and the ecological processes
of which they are a part; ecosystem diversity,
community diversity, and genetic diversity are
three main components |
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living things of the same kind that are able
to reproduce successfully |
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| the formation of new species as a result of geographic, physiological, anatomical, or behavioral factors that prevent previously interbreeding populations from breeding with each other |
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| Structural/behavioural adaptation |
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| statistic which is intended to measure the biodiversity of an ecosystem |
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| the air, water, minerals, organisms, and all other external factors surrounding and affecting a given organism at any time. |
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| the adaptation of an organism or a part of an organism to a specific function or condition in response to environmental conditions |
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| An undeveloped organism in its beginning stages |
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| farming of ocean and freshwater plants and animals for human consumption |
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| a small, usually one-celled reproductive structure produced by seedless plants, algae, fungi, and some protozoans that is capable of developing into a new individual |
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| the male reproductive organ of a flower |
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| A structure in which DNA is arranged and along which genes are located |
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| relating to or affecting the body, especially the body as considered to be separate from the mind |
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| a nucleic acid molecule in the form of a twisted double strand double helix that is the major component of chromosomes and carries genetic information. DNA, which is found in all living organisms except some viruses, reproduces itself and is the means by which hereditary characteristics pass from one generation to the next. |
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| The study of how heritable characteristics are transmitted through generations of organisms |
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| relating to or used in the home or everyday life within a household |
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| The female reproductive organ of a flower |
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| Sac containing the female sex cells (gametes) of a plant |
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| The intentional altering of the DNA of an organism if a population if organisms |
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| A genetically identical copy of an entire organism or of its cells or genes; cloning is the process of creating a clone |
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| the struggle between organisms of the same or different species for limited resources such as food or light |
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capable of being inherited; inheritable; hereditary.characteristics that are
transmitted from generation to generation, such as
eye colour |
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| with or pertaining to reproduction: a reproductive process; reproductive organs |
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| reproduction, as budding, fission, or spore formation, not involving the union of gametes |
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a type of asexual reproduction in
amoebas and other organisms in which a parent
cell divides exactly into two identical cells |
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| to remove or destroy totally |
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| an asexual spore produced by certain algae and some fungi, capable of moving about by means of flagella. |
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| The undifferentiated plant tissue from which new cells are formed, as that at the tip of a stem or root. |
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| containing a gene or genes transferred from another species |
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| the use of living organisms or other biological systems in the manufacture of drugs or other products or for environmental management |
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| the struggle among organisms, both of the same and of different species, for food, space, and other vital requirements |
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| Of, relating to, or capable of reproduction |
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| an organisim that offers a signal of the biological condition in a watershed |
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| an organisim that offers a signal of the biological condition in a watershed |
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| an organisim that offers a signal of the biological condition in a watershed |
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| the intentional mating of two animals in an attempt to produce offspring with desirable characteristics or for the elimination of a trait |
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| An organization dedicated to keeping old varieties of plants alive and available to breeders and gardeners by preserving seeds of these |
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| a cell formed by fusion of two similar gametes |
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| the transfer of genetic material between bacteria through direct cell-to-cell contact |
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| is a cell that is the result of fertilization |
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| the protoplasmic tube that is extruded from a germinating pollen grain and grows toward the ovule. |
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| the primary or rudimentary leaf of the embryo of seed plants |
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| variation in phenotypic traits |
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| the differences in characteristics that have a defined form |
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| a sudden departure from the parent type in one or more heritable characteristics |
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| a substance or preparation capable of inducing mutation |
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| A formal agreement between two or more partys |
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| locations which receive protection because of their environmental, cultural or similar value |
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| one of two identical chromosomal strands into which a chromosome splits longitudinally preparatory to cell division |
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| a specialized structure on the chromosome, appearing during cell division as the constricted central region where the two chromatids are held together and form an X shape. |
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| 1.A threadlike linear strand of DNA and associated proteins in the nucleus of eukaryotic cells that carries the genes and functions in the transmission of hereditary information |
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| a sudden departure from the parent type in one or more heritable characteristics, caused by a change in a gene or a chromosome |
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| the sexual reproductive cell at any stage from the primordial cell to the mature gamete |
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| cells that take part in the formation of the body, becoming differentiated into the various tissues, organs, etc |
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| having two similar complements of chromosomes |
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| a single set of chromosomes |
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| there is no more of a snigle species in the world |
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| there is so little ofthat specie left, people are worried if there is enough varation for that specie to survive |
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