Questions on the classification of biological organisms, and the methods used for classifying them.

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2
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1answer
50 views

Citing species in a biology article

My question concern the abbreviation of the genus of a species. I talk about two species: Amphiprion clarkii and Amphiprion perideraion. Question 1 Let's assume I haven't said a word about these ...
2
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1answer
1k views

What is the difference between these terms: clade, monophyletic group and taxon?

Wikipedia definitions for these terms are pretty similar: http://en.wikipedia.org/wiki/Clade http://en.wikipedia.org/wiki/Monophyletic_group http://en.wikipedia.org/wiki/Taxon They sound like the ...
2
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1answer
68 views

What is actually systematics? What is the difference between it & taxonomy?

In the last century, even during the past decades of the present century, students of systematics could not have thought of any fundamental distinctions among Taxonomy & Systematics . These ...
2
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1answer
42 views

Meaning of the word Oleracea

What does "oleracea", as appears in numerous plant species (scientific) names, mean? Examples: Euterpa oleracea, Brassica oleracea, Portulaca oleracea, Acmella oleracea, Spilanthes oleracea.
2
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1answer
53 views

Relationship between leaf structure and Photosynthesis rate

We can see numerous leaf structures in plant kingdom. As the leaves are designed for photosynthesis, their structure must be a factor for any optimization in photosynthesis or chlorophyll ...
2
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1answer
318 views

What is difference between breed, variant, subspecies and species?

What is the difference between breed, variant, sub-species and species? Are there any similarities between sub-species and sub-population of a region?
2
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1answer
41 views

What makes certain obligate anaerobes viable in fermentation starter cultures?

If Propionibacterium are obligate anaerobes (to wit, poisoned by oxygen), what makes 'Dairy' or classical propionibacteria (e.g. P. shermanii, P. jensenii, P. acidicpropionici, et al) viable in ...
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2answers
675 views

What is the most complex plant form?

At school we were told on scale of 0 through 1000 the animal kingdom ranges from amoeba the simplest/primitive being at 0, and Humans the most complex animals at 1000; what are the equivalent ...
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1answer
258 views

Birds and Dinosaurs

This came up in an argument with some friends. I know that birds are direct descendants of dinosaurs, shown pretty clearly through the fossil record. However, is it proper to say that birds are ...
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2answers
1k views

Are mature RBCs prokaryotic?

Mature mammalian RBCs have all the characteristics of a eukaryotic cell except that they don't have a nucleus, they don't have any cell organelles. Does this mean that RBCs are classified as ...
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2answers
23 views

Why are there seven entries for Pimpinella dioica in the Catalogue of Life?

And six for Haliclona digitata, and five for Ichneumon varius. A couple of the duplicate entries are synonyms for other species, which is understandable, but most are the "accepted name". Shouldn't ...
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1answer
50 views

Why are Oxyuranus snake species named Taipan?

It is interesting, why are Oxyuranus species called Taipan. The snakes are Australian but taipan looks like of Chinese origin word (it means big shot - important person).
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1answer
31 views

Alternative plant taxonomies to Linneaus

In addition to Linneaus-inspired taxonomies of the botanical world, I suppose there are some other proposals for different kinds of taxonomic accounts, perhaps for specific sub-domains of botany or ...
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2answers
36 views

Could alpha-numeric taxonomy of fungi make things simpler?

Please feel free to construe this question broadly--I don't see why the question would not apply to branches of biology other than mycology. If the goal of taxonomy is to create classification of ...
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1answer
63 views

Usage of the taxonomic classification “Pinnipedia”

According to ITIS the classification Pinnipedia is invalid, and it is proposed to rather use Caniformia. The later group however includes a range of terrestrial animals as opposed to the pinnipeds ...
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0answers
12 views

More general usage of the term 'congener'

In taxonomy the term 'congener' refers to two species within the same genus. In more colloquial usage, it can refer to any two objects within the same category. Is there a way to refer to related ...
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0answers
34 views

Does Pseudomonas aeruginosa have any common name at all?

Pseudomonas aeruginosa is the fifth most written about¹ binomial name of all species. I'm having trouble coming to terms with the possibility that such a well researched and studied organism has never ...
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0answers
16 views

What are the main principles of the Bacteriological Code?

Although the Bacteriological Code is an important guideline for taxonomists and microbiologists, describing the criteria for delineating species and higher taxa of the prokaryotes, I, and plenty of ...
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0answers
30 views

Endemic plant families on islands?

Endemism on islands is quite a common phenomenon, at least at the level of species or genera. Old continental fragments like Madagascar or New Caledonia may even harbour endemic families which went ...
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0answers
76 views

Regarding the kingdom Animalia, which phylogenic tree is more common: Molecular Comparisons or Body-Plan Grades

In the picture below, which I obviously do not own: it depicts two different phylogenic trees, one which is based on molecular comparisons and another one which is based on body-plan grades. My ...
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1answer
37 views

How can green algae be both multicellular and unicellular?

How can green algae be both multicellular and unicellular? What are the cases in which it can be both uni and multi cellular?
0
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1answer
34 views

Information and image of Genus Acesina

I am searching for image and information, like distribution etc of the genus Acesina. The Taxonomic tree is: ...
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1answer
44 views

What is the smallest known organism with a skeleton? [closed]

See question title. After doing some looking around on my own I haven't found much so I figured I'd ask some experts.
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1answer
546 views

Which plants live for more than one year and less than two years? [closed]

What kinds of plants live for more than one year and less than two years? Are there any categorical or taxonomical names for such plants?