enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Biological organisation - Wikipedia

    en.wikipedia.org/wiki/Biological_organisation

    Biological organisation is the organisation of complex biological structures and systems that define life using a reductionistic approach. [1] The traditional hierarchy, as detailed below, extends from atoms to biospheres .

  3. Integrative level - Wikipedia

    en.wikipedia.org/wiki/Integrative_level

    The levels concept is an intellectual framework for structuring reality. It arranges all entities, structures, and processes in the universe, or in a certain field of study, into a hierarchy, typically based on how complex their organization is. When arranged this way, each entity is three things at the same time: It is made up of parts from ...

  4. Category:Levels of organization (Biology) - Wikipedia

    en.wikipedia.org/wiki/Category:Levels_of...

    Pages in category "Levels of organization (Biology)" The following 2 pages are in this category, out of 2 total. This list may not reflect recent changes. B.

  5. Category:Levels of organisation (Biology) - Wikipedia

    en.wikipedia.org/wiki/Category:Levels_of...

    Main page; Contents; Current events; Random article; About Wikipedia; Contact us; Donate

  6. Biological system - Wikipedia

    en.wikipedia.org/wiki/Biological_system

    A biological system is a complex network which connects several biologically relevant entities. Biological organization spans several scales and are determined based different structures depending on what the system is. [1] Examples of biological systems at the macro scale are populations of organisms.

  7. Organ (biology) - Wikipedia

    en.wikipedia.org/wiki/Organ_(biology)

    The organ level of organisation in animals can be first detected in flatworms and the more derived phyla, i.e. the bilaterians. The less-advanced taxa (i.e. Placozoa, Porifera, Ctenophora and Cnidaria) do not show consolidation of their tissues into organs. More complex animals are composed of different organs, which have evolved over time.

  8. Hierarchy theory - Wikipedia

    en.wikipedia.org/wiki/Hierarchy_theory

    Hierarchy theory is a means of studying ecological systems in which the relationship between all of the components is of great complexity. Hierarchy theory focuses on levels of organization and issues of scale, with a specific focus on the role of the observer in the definition of the system. [1]

  9. Unit of selection - Wikipedia

    en.wikipedia.org/wiki/Unit_of_selection

    A unit of selection is a biological entity within the hierarchy of biological organization (for example, an entity such as: a self-replicating molecule, a gene, a cell, an organism, a group, or a species) that is subject to natural selection. There is debate among evolutionary biologists about the extent to which evolution has been shaped by ...