Chapter 4 - Ecosystems: everything is connected

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Ecosystems: Everything is Connected, Evolution, the Diversity of Living Things

ecosystem

a community of organizms and their abiotic environment

biotic factors

an environmental factor that is associated with or results from the activities of living organisms (including plants, animals, and dead organisms)

abiotic factors

non-living factors including temperature, water, sunlight, wind, rocks and soil

organism

a living thing; anything that can carry out life processes independently

species

a group of similar organisms that can mate with each other and produce fertile offspring

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 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; also called survival of the fittest

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

the ability of one or more organisms to tolerate a particular chemical designed to kill it

The Kingdoms of LIfe

Archebacteria, Eubacteria, Fungi, Protists, Plants, Animals (AEFPPA - always eat fresh produce planted alive)

Archebacteria

kingdom of unicellular prokaryotes that can live in extremely harsh conditions, lack pepdigloglycan in cell wall

Eubacteria

In a traditional taxonomic system, a kingdom made up of all prokaryotes except members of the kingdom Archaebacteria; Currently, biologists prefer to classify members of this kingdom into the domain Bacteria

Fungus

an organism whose cells have nuclei, rigid cell walls, and no chlorophyll and that belongs to the kingdom fungi

Protist

an organism that belongs to the kingdom protista; generally, a single-celled organism with a nucleus and organelles, including amoebas, euglenas, paramecia and volvox

gymnosperm

a woody, vascular seed plant whose seeds are not enclosed by an ovary or fruit

angiosperm

a flowering plant that produces seeds within a fruit

invertebrate

an animal that does not have a backbone

vertebrate

an animal that has a backbone; includes mammals, birds, reptiles, amphibians, and fish

Flickr Creative Commons Images

Some images used in this set are licensed under the Creative Commons through Flickr.com. Click to see the original works with their full license.

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