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Questions tagged [classification]

Pertaining to the classification of organisms.

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Why is xylem a tissue and not an organ?

My textbook "CGP AS-Level Biology Exam Board: Edexcel Complete Revision & Practice" says xylem is a tissue. Then I read from this website that "[Xylem's] major components include xylem parenchyma,...
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Would Ants and Termites be considered r or K strategists?

My initial assumption is that most swarm species would fall under r strategists due to their prodigious number of offspring, but it also occurred to me that since worker types are non-propagating we ...
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How specimens are organized in a large biological specimens archive

In a library, (and I'm not totally sure about this, but from experience) books are organized by category/theme into sections, and then they are given a number so that, globally, the numbers are ...
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Are All Taxonomic Groups Uniquely Named?

The Linnaean classification system classifies and groups organisms into taxonomic groups: Kingdom, Phylum, Class, etc. Obviously, a clade at any taxonomic level is uniquely determined by its ...
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What does “genus VI” mean in mycology?

This Guidebook is called "How to identify mushrooms to genus VI". Some other editions/versions of it say "Genus III" or "Genus I". What does this mean?
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Is identifying the genus of a fungus (mushroom specifically) enough?

Does the genus of a mushroom have enough information about it, without the species? Let's say I wanted to identify a mushroom (when picking) to see if I can safely pick and later eat it. Let's say I ...
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Why is “VOLVOX” not considered to be in PROTOZA?

Volovox is an Algae, but it moves with the help of Flagella. Protozoa has members that move by Flagella. Why is Volovox taxonomically in the Algae instead of Protozoa?
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Have traditional categories such as phylum, class, genus, been dispensed with in modern taxonomy?

Looking through the one zoom and EOL projects I see no reference to such categories.
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Who are Ursprungliche Eukaryoten?

The school textbook of my daughter (the textbook is written in German) describes the five kingdoms of life: prokaryota, plants, fungi, animals and "Ursprungliche Eukaryoten". These are defined as "...
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The parts of the phylogenetic nomenclature that need to be “unique”

I am not quite sure I have sorted through the diversity of approaches to nomenclature, but I had a specific question to help clarify what is going on. Basically I am just wondering what needs to be ...
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Any examples of a group of micro-organism that continuously spans two or more species classifications?

Are there any examples of a group of micro-organisms where two different, established species are designated and these two groups meet all aspects of the definition of species (perhaps can not ...
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Do all Fungi have similar cells?

I know that most fungi are not differentiated into tissues. And tissues are groups of specialised cells aiming to perform a collective function. Does it, then, follow that most fungi do not have ...
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is there an easy way to remember taxonomy? [closed]

So I have trouble remembering the order of taxonomy for classification. i.e domain>kingdom>phylum>class>order>family>genus>species I can never remember it, is there an good mnemonic to remember them? ...
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Please help me identify this jelly fish

I've seen these jellyfish in thailand and was wondering what species they were. All I know is that there are lot in the Chonburi area and they sting in not deadly but hurts. Images for the jellyfish ...
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If the human atlanto-axial joint is pivotal only, what accounts for the craniums additional degrees of freedom?

The atlanto-axial joint is supposedly a pivot joint. I assumed it would be considered a ball-and-socket joint, based on a) the physical shape of the dens, and b) the degrees of motion of the cranium ...
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How to learn and memorize animals classification to get an intuition about them?

I would like to have a good intuition on how close is what animal to which one and how large each group is by number of species and population. I was wondering if there is a good website with good ...
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How many species can have the same scientific name? [duplicate]

For my science homework, a question came up asking how many species can have the same scientific name. I'm pretty sure that each species has a different scientific name, but just to be sure...
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Classification of ciliates found in city stream water

I recently collected some water along with some precipitations from a stream. It is quite shallow (less than a meter in depth) and its flow rate is slow, so that the precipitations won't get washed ...
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What kind of factors determine how someone looks according to their race or ethnicity?

From what I read, race is considered the biology, the physical traits inherited by ancestry. Ethnicity and nationality have to do with social construct and cultural identity. This is almost the same ...
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Is it correct to classify technolgy as a kingdom?

I recently read some article about a possible 7th kingdom of classification . They considered technology as a kingdom and named it Technium. Actually I was not sure whether it could be called a ...
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Is ivy (genus Hedera) a shrub or an herb?

It seems like the difference between a bush (shurb) and an herb is that a bush has a woody stem. What does that make ivy (genus Hedera)? I know that ivy can get a pretty hard stem, does that count as ...
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What spider is that in south of Brazil?

I'd like to know if it is possible to identify the spider in the photo below. In fact, as shown in the next picture, it is very small. Location: South of Brazil.
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What order is this butterfly?

I found this butterfly in the rocky mountains of colorado. Its obviously a lepidoptera but I'm not sure what family this butterfly could be. I found it perched on a bush and it is around 40ish mm long....
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What is the difference between kingdoms protistae and protoctistae?

I understand that both kingdoms represent primitive eukaryotic organisms, and both contain both unicellular and multicellular organisms. What are the points that distinguish one kingdom from the ...
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To which SCOP Class corresponds the following secondary structure?

I need to classify this protein into one of the SCOP class (all $\alpha$, all $\beta$, $\alpha +\beta$, $\alpha/\beta$, or small protein). I'm having difficulties understanding the difference ...
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Are acid-fast bacteria Gram-positive or Gram-negative?

Both procedures involve using a stain, decolorising agent, and then a second stain. I am tempted to conclude that acid-fast bacteria, which resist decolorisation (eg. by strong carbol fuchsin), also ...
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Chlamydomanas are present in Kingdom Protista or Plantae?

Chlamydomonas, Chlorella are present in Kingdom Protista as well as Plantae under division algae. In which kingdom they correctly belong to?
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What is Biradial Symmetry?

I am trying to visualize biradial symmetry. I have read the section in the Wiki entry on Symmetry in Biology but it is quite brief and there is no example to illustrate it. I haven’t been able to find ...
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Classification of living organisms in kingdoms [closed]

What feature justifies the placing of prawns and grasshoppers in the same phylum
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Are there more than Five kingdoms? [closed]

Is it true that scientists have disregarded their belief that there are five kingdoms and instead, they have theorized that there are multiple kingdoms?
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Taxonomy and 'breeds' of animal species

How do taxonomists classify breeds of organisms in a species? When talking in such depths about organisms (using RNA and DNA), don't they have to unavoidably do it? I read in another question that ...
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Are there animals that are present in two different classes?

Are there animals that are present in two different classes, like amphibian and bird, reptile and mammal etc.?
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Why is traditional rank based taxomomy considered by some as logically inconsistent with phylogenetic knowledge?

Following is from wikpedia: Under the traditional nomenclature codes, such as the International Code of Zoological Nomenclature and the International Code of Nomenclature for algae, fungi, and ...
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Classifying Polypeptides (and/or Proteins)

Since polypeptides are a linear chain of twenty amino acids, each having a single letter abbreviation (e.g. Alanine = A). So can a polypeptide be represented as just the sequence (say: ADN for an ...
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Taxonomy: Categorising Collembola [closed]

Observe: In some rows (Order, Family), the third column reveals a discerning physical characteristic or body type (...
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Can prawns be classified as fish, or is their position ambiguous?

Today a zoologist told me that prawns and fish are very similar, but zoologists/taxonomists have put them in different categories because their distinction is unclear (like hydrogen in the periodic ...
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Why is Hydra classified under Hydrozoa when it has neither a planula larva, nor a medusoid form?

If the general basis of classification of cnidarians is with respect to the body form - medusoid or polypoid, or in the incidence of metagenesis (as is common in hydrozoa), both, then, on what basis ...
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How can one identify an organism from its dissymmetry ratio?

If I am given the dissymmetry ratio of an organism ((A+T)/(G+C) is a constant), how can I identify the source of the DNA and classify the organism?
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Are viruses technically organisms, or not? [duplicate]

Are viruses technically organisms or not? A quick Google search query for the term; are viruses organisms?, reveals various conflicting and somewhat inconclusive ...
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Is Asteraceae and Compositae the same family?

I'm wondering what taxonomic family sunflowers (Helianthus) belong to. Although it's mentioned it belongs to family Asteraceae it is also a composite flower. So it belongs to Asteraceae or Compositae ...
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Binomial nomenclature: Why am I seeing different genera with the same species name?

I have looked online but still do not understand how two organisms can have the the same species names but be in different genera? Do all genera share common species names? Also which would be more ...
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Are platyhellmintes and annelids segmented?

Are the organisms of platyhelminthes unsegmented worms or segment? And what about those belonging to annelida? I guess Platyhelminthes are unsegmented and annelida are segmented but i am not sure ...
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Differences on biological classification?

Why we use the term phylum for kingdom animali but for kingdom planti ,fungi and prokaryota we use them division? What difference between phylum and division ?
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Do endosymbiotic organelles have Latin classification?

Do endosymbiotic organelles such as chloroplasts or mitochondria have Latin classification?
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Can anyone ID this ant queen species?

It was found in Hong Kong! Below are a few basic information: Place: Hong Kong Habitat: Forest. I live very close to a mountain with lots of forestation. Where Collected: Found it in my window slit ...
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Difference between Category, Rank and Taxon

Is there any differences between the terms Category, Rank and Taxon or they all are same? I remember an explanation which goes on like this: Category and Rank are the same and are the categories of ...
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Can someone tell me the species of this lizard?

It's a green lizard with a silver tail, and it has pretty, bluish eyes. I saw it today, July 26th, trying to get some shade on a hot, sunny day (32 degrees) at around 18:00 in Austin, TX USA. It's ...
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why not classify organisms based on genetic distance? [duplicate]

When learning about "families of animals" in mid-primary school, my son asked me if there is not a better way to classify animals than by looking at them (they were taught that animals are grouped ...
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Which organisms have their cell wall made of polysaccharides and amino acids?

I came across a question which somewhat goes like In which of the following kingdom, most of the members have a cell wall made of polysaccharide and amino acids ? - Monera or Fungi. To me it ...
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What is a group of tortoises called?

This post at Mental Floss stated that a group of tortoises is called a 'Creep'. I had never heard of that before, and in trying to find the references for the name, I was surprised that I couldn't ...