Bacteria and Vocabulary List Define

Topics: Bacteria, Biology, Plant Pages: 2 (408 words) Published: February 25, 2014
CHAPTER 4: THE ORGANIZATION OF LIFE
VOCABULARY LIST

DEFINE THE FOLLOWING TERMS FROM THE GLOSSARY:

ECOSYSTEM: a community of organisms and their abiotic environment.

BIOTIC FACTOR: an environmental factor that is associated with or results from the activities of living organisms (100)

ABIOTIC FACTOR: describes the non-living part of the environment, including water, rocks, light, and temperature.

ORGANISM: a living; anything that can carry out life processes independently.

SPECIES: a group of organisms that are closely related and can mate to produce fertile offspring; also the level of classification below genus and above sub-species.

POPULATION: a group of organisms of the same species that live in a specific geographical area and interbreed.

COMMUNITY: a group of various species that live in the same habitat and interact with each other.

HABITAT: the place where an organism usually lives.

NATURAL SELECTION: the process by which individuals that are better adapted to their environment survive and reproduce more successfully than less well adapted individuals do; a theory to explain the mechanism of evolution.

EVOLUTION: a heritable change in the characteristics within a population from one generation to the next; the development of new types of organisms from preexisting types of organisms over time.

ADAPTATION: the process of becoming adapted to an environment; an anatomical, physiological, or behavioral change that improves a population’s ability to survive.

ARTIFICIAL SELECTION: the selective breeding of organisms (by humans) for specific desirable characteristics.

RESISTANCE: in biology, the ability of an organism to tolerate a chemical or disease-causing agent.

ARCHEABACTERIA: a kingdom made up of prokaryotes (most of which are known to live in extreme environments) that are distinguished from other...
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