A group of cells working together to perform a certain function (job) for an organism

A group of different tissues working together to perform a certain function in an organism

A group of organs working together to perform a certain function in an organism

A living thing

The arrangement of tissues, organs, or other parts of an organism

The job that a body part does for an organism

Organism made of more than one cell

Organism made of a single cell

A type of cell without a nucleus

A type of cell having a nucleus

The structure in a cell containing the genetic material and controls all cell activities

The scientific classification of organisms into specially named groups based on shared characteristics

The grouping of organisms based on their similarities and differences

The highest level of classification of life.

Domain of unicellular, prokaryotic organisms living often in extreme environments (extremophiles)

Domain of single-celled organisms that lack a nucleus (prokaryotic)

Domain comprised of eukaryotes or organisms whose cells contain a true nucleus

The second largest grouping of classification of living organisms

Single-cell, prokaryotic organisms with a rigid cell wall

spherical or rod shaped and live in a variety of environments

Unicellular, prokaryotic organisms found in oxygen free environments (extreme environments)

Single or many- celled organisms that have cell walls, do not contain chlorophyll, heterotrophic, and reproduce by budding or spores (asexual)

Unicellular or multi-cellular, and heterotrophic or autotrophic, eukaryotic organisms

A kingdom of multicellular, autotrophic (through the process of photosynthesis), eukaryotic organisms

Some plants are asexual (spores) and others are sexual in reproduction (seeds from flowering plants)

Multicellular, heterotrophic, eukaryotic organisms that reproduce sexually (two parents)

A systematic tool for identification using a series of paired descriptions to choose between

Organisms capable of making its own food

An organism that is dependent on other organisms for food

An organism that thrives in extreme conditions(heat, chemical, salinity) lacking oxygen

Reproduction involving two parents which produces a more diverse offspring as half of the genes passed onto the offspring come from each parent.

Reproduction involving one parent. The offspring is a clone of the parent having exactly the same genetic make-up.

Theory, based on scientific evidence, that describes how organisms change over many generations

The non-living components of an ecosystem

The living components of an ecosystem