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

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2
votes
1answer
9k views

Why are bacteria and archaea in different domains?

As I understand it, the main difference between the Bacteria and the Eucaryota domains are that eukaryotes have a nucleus and bacteria don't. I understand that bacteria and archaebacteria have enough ...
3
votes
1answer
143 views

An unexpected mushroom in my garden

My grandma is a great fan of mushrooms and knows quite a lot about them. About 10 years ago, she started throwing out mushroom remnants in one special place, in order to grow her own mushrooms. In ...
3
votes
2answers
151 views

What is the species of these mushrooms?

The mushrooms are gilled with a light-brown cap. The stem is widened to the base. What species is it? Is it considered edible? They are found in mixed forest in Moscow, Russia. They grow in the ...
1
vote
2answers
641 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 ...
15
votes
6answers
2k views

Human evolution: Where *exactly* did the first human come from, whose parents were not?

Layman here. So I have never really quite understood this facet of human evolution, (or any other for that matter), in that, I understand the evolutionary process, but I get lost on the 'border' ...
13
votes
3answers
3k views

When has an organism evolved enough to be called a new species?

Imagine that we take a population of horses, split them in half and place them in completely different environments. The two species will evolve separate from each other and because the environment is ...
8
votes
1answer
374 views

Is sexual reproduction outside the same biological family possible? Has it ever occured successfully?

Are there any examples of two species taxonomically classified in different biological families that have successfully hybridized and produced viable offspring? If not, is there an example of where ...
4
votes
2answers
2k views

Online course on Plant Taxonomy and Physiology

After following a course in Permaculture, I realised that if I want to get serious about it, I need to be able to distinguish plants. So I am looking for an online Video course on Plant Taxonomy and ...
7
votes
2answers
2k views

Why animals can move and plants cannot in general?

To clarify, I think the answer should be able to explain: What are animals? What are plants? What's the difference between animals and plants (How do biologists differentiate them, if they ...
9
votes
1answer
2k views

Does the use of “var”, “x”, and/or “ssp” in a scientific name provide specific information?

What exactly does it mean when a plant has a scientific name that specifies a vairety, for example Nothofagus solandri var. cliffortioides, or when the name includes an "x", as in Populus ...
5
votes
1answer
965 views

What's the opposite of a thermophile?

Thermophiles, heat-loving organisms, have been a popular topic of research for decades due in large part to the utility of their enzymes in various chemical reactions (Taq Pol single-enzymedly made ...
5
votes
2answers
409 views

What does the 34/70 in Saccharomyces pastorianus Weihenstephan 34/70 stand for?

I've searched everywhere. No Wikipedia page. No information on NCBI. I searched all occurrences of 34/70 in some primary research articles! The best I've found is this brewery forum where someone ...
10
votes
3answers
2k views

Species with reproduction barriers that can both reproduce with a third species

To start with, I do not have a sound knowledge in biology or any formal education in the area. I was told that one of the definition of a species is a reproductive barrier, which means that if two ...
6
votes
1answer
121 views

On which date did the official name change of Lactobacillus sanfranciscensis change?

When did the change of official name from Lactobacillus sanfrancisco to Lactobacillus sanfranciscensis happen? An answer ((to the exact day OR within a few days) AND the name of the conference at ...
11
votes
1answer
110 views

To which distinctions does the term “hymenoptera” refer?

Hymenoptera is an order of insects that includes bees, ants, and wasps. A quick search gives the following etymological analysis of the term hymenoptera. hymen (membrane) + pteron (wing) Does ...
12
votes
2answers
154 views

How to decide which is the correct scientific name for a particular species

To start with, I am not a person having sound knowledge in biology. When I started my search for phyto-chemicals in a particular family in the plant kingdom, I got confused. The scientific papers use ...
9
votes
1answer
171 views

Is it correct to regard archeaic humans (i.e.n Neanderthals and Denisovans) as distinct species to Homo sapiens?

There is increasing evidence (e.g. here) that Homo sapiens interbred with contemporary homonins such as Homo neanderthalensis and the "Denisovans". Although these homonins do show differences in their ...
6
votes
1answer
138 views

Could someone recommend a book for surveying species?

I'm trying to get/renew basic knowledge of species. Could someone recommend a book for surveying "important"/"representational" species? I am looking for a book with good illustrations and that covers ...
-2
votes
1answer
510 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?
9
votes
2answers
139 views

Acknowledging differentiation of species, in historical times

This is at least partly an historical question, and I am not even remotely a biologist of any sort, so apologies beforehand if it's a little obscure. I often wonder how many distinctions were made in ...
6
votes
3answers
325 views

Where can I find the common names for the zoology taxonomy?

Forgive me if my question does not belong here or if I'm using incorrect terms, but I'm not educated in biology at all. I'm investigating the workings of the biological classification system. I was ...