Questions tagged [morphology]

The study of the gross structure of biological entities, including organisms, tissues and cells.

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Phylogenetic method to detect shift in mean of continuous variable

I am currently working on a project where I study the change of a continuous morphological variable with body size (measured as body weight) across diverse taxa (insects, spiders, lizards, frogs). In ...
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Why do certain ferns have roughened spore surface?

Ferns such as Anemia phyllitidis, Blotiella lindeniana, Ctenitis hirta, Cystopterix fragilis, Hemionitis palmata and many others have roughened splity spore surface. I ask, why is it evolutionary so?...
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29 views

What is a 1-flowered raceme?

PlantNET describes the inflorescences of Daviesia acicularis as: Racemes reduced to 1 flower How is a 1-flowered raceme different from a single flower?
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How does DNA organise a cell's physical position within a body?

How do cells "know" where they are supposed to be in relation to other cells, in forming the physical shape of the body? If you have ever tried to organise or choreograph the physical positions of a ...
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35 views

Ways to identify/distinguish individual coyotes?

Are there any methods to distinguish individual coyotes from a distance (with a binocular or telephoto lens)? Are there marks or patterns we could be looking for? Similarly, if I have seen a coyote ...
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223 views

What are the differences between internal organs between sub-saharan Africans and Northern Europeans

Lets take as examples a typical Norwegian and a typical Nigerian. In terms of human anatonomy the outer differences are more obvious e.g. (on average) White skin vs dark skin Pointy nose vs broad ...
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Hypanthial disc

Can anyone illustrate what the hypanthial disc is? It is descriped throughout the key to Rosa in the Flora of North America. I think that I understand that the hypanthium is the hip which is formed ...
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164 views

Popular science on carcinisation

Carcinisation is described succinctly in a Wikipedia entry. The entry references few scientific publications regarding the subject. But are there any popular scientific articles describing and giving ...
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How to incorporate size data with shape in stereographic morphometrics?

This may be an extremely simple point that I am missing, but how are you supposed to know the exact size of a structure being analyzed in three dimensions? When doing two dimensional morphometrics, ...
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44 views

Flowers in Arachis hypogea, are they clestogamous or chasmogamous?

I have seen the flowers of groundnut, they open and remains open for one day, so they should be chasmogamous, but in my school book, they mentioned it as clestogamous, and I searched for it in ...
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I need to identify the genus of this colony just by its morphology, can somebody help me?

it was grown on TSA it's a mesophilic bacteria. (it was contaminated by E. coli, so ignore the clearer and smoother colonies).
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Cell type = gene expression spectrum?

I wonder if it is correct to say that the type of a cell is essentially its spectrum of expressed genes, i.e. the rates at which it produces specific proteins. As these rates may change (e.g. during ...
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Size distribution of all known species in the domain bacteria

I have found the smallest bacteria are around 200nm (e.g Mycoplasma genitalium an ultramicrobacterium) and largest are around 700um (Thiomargarita namibiensis). I am looking for a graph that ...
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1answer
41 views

Can anyone help me identify the size of a mantis shrimp club?

The mantis shrimp punches with it's club to destroy its prey's shell. I found on the internet that its body size is around 4 inches. What's the size of it's club?