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Dictionary » P » Phylum

Phylum

Definition

noun, plural: phyla or phylums

(1) A taxonomic rank at the level below Kingdom and above Class in biological classification, especially of animals.

(2) A group of Classes with similar distinctive characteristics.


Supplement

Examples: Class Mammalia (mammals), Class Aves (birds) and Class Ascidiacea (sea squirts) all belong to Chordate Phylum, which is a group of animals that have notochords at some time in their life cycle. Aside from Chordata, other well known phyla are the Mollusca, Porifera, Cnidaria, Platyhelminthes, Nematoda, Annelida, Arthropoda and Echinodermata, which all belong to Kingdom Animalia.


Word origin: New Latin ph[ymacr]lum, from Greek phūlon, class.

Compare: division.
See also: taxonomy.


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Taxonomy - Populus trichocarpa

I am setting up a table for a report that contains the phylum and class of the organisms therein. I am having problems identifying the class of a few of the organisms in the table. I have been using the taxonomy browser at NCBI to get my information, ...

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by ham
Fri Mar 25, 2011 2:05 am
 
Forum: Botany Discussion
Topic: Taxonomy - Populus trichocarpa
Replies: 2
Views: 548

What is the best way to categorize Phylum for studying?

To make this as painless as possible you need to give specifics on what about Phylum confuses you. Or we will just be shooting in the dark. Its really such a broad question. So to best respond to your question just narrow it down to better assist you. Thank you.

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by LostBio
Mon Mar 14, 2011 8:48 pm
 
Forum: Cell Biology
Topic: What is the best way to categorize Phylum for studying?
Replies: 1
Views: 298

What is the best way to categorize Phylum for studying?

... to get a better grasp on each ones order, association and necessity... Gosh... I am doing well day to day, but I fear I am not fully understanding Phylum and all... Help, K

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by luckyyou13
Mon Mar 14, 2011 6:48 pm
 
Forum: Cell Biology
Topic: What is the best way to categorize Phylum for studying?
Replies: 1
Views: 298

Why do you keep talking about species

... Then I would say that the system is working rather effectively, as they are ordered in a way that makes sense and most of the animals within a phylum share certain characteristics and developments. A species of animal is an animal that has become so diverse from the others of it's kind that ...

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by MillieKittan
Thu Mar 03, 2011 7:59 am
 
Forum: Evolution
Topic: Why do you keep talking about species
Replies: 23
Views: 25908

QuestionS on Taxonomy

... and shown to be the same. This would indicate that the bacteria are: 1. The same species 2. Belong to the same genus 3. Belong to the same phylum 4. None of the above My choice was (2) this is because variation between genus is <10% when it comes to G+C content The definition of a species ...

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by klapausius
Fri Oct 08, 2010 1:32 pm
 
Forum: Microbiology
Topic: QuestionS on Taxonomy
Replies: 1
Views: 1282
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