multicellular organism
Let an agent explain multicellularity and its evolution, describe how cells cooperate in multicellular organisms, and classify organisms by cellularity with attribution to biology.
Research draft, second pass
A second pass drafted this model: the structure a model of this thing needs, and what is known about it in the world. The line under this one says how the second half was obtained - researched against sources, or recalled without web access, in which case nothing here was read anywhere and every claim is a lead to verify. Unreviewed either way.
written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify
Researched by: Claude
Purpose and description
Let an agent explain multicellularity and its evolution, describe how cells cooperate in multicellular organisms, and classify organisms by cellularity with attribution to biology.
An organism consisting of more than one cell, with cells differentiated into tissues and organs in animals, plants and most fungi, and simpler multicellular forms in some algae and other groups, arising through cell division without separation and coordinated by signalling; multicellularity evolved independently many times and is contrasted with unicellular organisms, though some archaea and bacteria form multicellular-like structures.
What it is for: Biology of organisms with many cells.
It can be explain what multicellularity is; describe its evolution and origins; explain cell differentiation and coordination; classify organisms by cellularity.
Distinguishing features
Many cells
Differentiation
Coordination
Evolved repeatedly
What it looks like
Animals, plants, fungi and multicellular algae.
How it is recognised
Many cooperating cells
Differentiated tissues in complex forms
Colonies of single cells are not true multicellular organisms
Related models
is a kind of - category
is related to - the units
is related to - contrast
is related to - origins
In practice
Families and kinds
animals
land plants and multicellular algae
multicellular fungi
simple multicellular forms in other groups
multicellular-like structures in some prokaryotes
Standards and regulation
Biological classification conventions
No regulation
Failure modes and hazards
Confusing colonies with multicellular organisms
Assuming a single origin
Misclassifying borderline groups
Also called
Where this came from
wikidata · CC0 1.0
Drafted structure
Bundle to layer to finding to question, as the second pass will find it: 4 bundles · 8 layers · 8 findings · 16 questions.
Define What counts.
Definitions.
Criteria
Criteria for multicellularity.
Criteria
Criteria.
- What distinguishes a multicellular organism from a colony of cells? definition
- Is this organism multicellular, unicellular or borderline? boundary
Examples
Groups.
Examples
Groups.
- Which major groups are multicellular, and which include both forms? provenance
- Do any archaea or bacteria form multicellular structures? provenance
Evolution Origins.
Attribution.
Origins
How it evolved.
Origins
Origins.
- How and how many times did multicellularity evolve, according to current research? provenance
- What are the oldest fossils? provenance
Models
Model organisms.
Models
Models.
- Which organisms such as Volvox are used to study the transition to multicellularity? provenance
- What experiments have shown? provenance
Biology How cells cooperate.
Mechanisms.
Differentiation
Cell differentiation.
Differentiation
Differentiation.
- How do cells differentiate and form tissues in multicellular organisms? definition
- How is cell behaviour coordinated? definition
Conflict
Cheating cells.
Conflict
Conflict.
- How do multicellular organisms suppress cheating cells, and how does this relate to cancer? provenance
- Which mechanisms are involved? provenance
Learn Teaching.
Education.
Teach
Teaching multicellularity.
Teach
Teaching.
- How can multicellularity be taught with examples and microscopy? action
- Which misconceptions arise? provenance
Senses
Related terms.
Senses
Related terms.
- Is an adult organism, a macroparasite or a specific species meant? boundary
- Which entry fits? action
What the second pass must settle
- Should the evolution of multicellularity be a separate entry?
- How should taxonomy databases be linked?
- How should borderline cases be presented?