Questions tagged [zoology]
The biological study of animals. Very broad use so be sure to add additional clarifying tags
1,616 questions
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Identify this marine organism
I have no idea what this organism is. I took a picture of it and looked through lots of books. I cannot even put it in a Phylum. Can you help please?
Marine organism, on coral reef, Indonesia, about ...
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What statistical tests should I use for my biological experiment that measures frictional forces before and after removal of lipids from a sample?
Broadly speaking, I am trying to understand if cuticular lipids have specialised lubrication properties by performing a simple sliding motion using predefined loads and sliding velocities, and ...
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Is acrosome a lysosome?
I have a book (not a standard source but nevertheless trustworthy) which says that acrosome in sperm originates from Golgi apparatus. I know that acrosomes contain hydrolytic enzymes just like ...
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Why are ligers bigger than their parents?
Ligers are the result of breeding between a male lion and a female tiger.One would expect that the liger would have a size in between the size of the lion and tiger however as it turns out ligers are ...
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Identification of the anatomy of a hydra (cnidaria)
I need help identifying the parts (4, 8, 9 and 10) of this hydra in the given diagram. The other parts have already been identified:
epidermis
gastrodermis
mesoglea
?
tentacles
cnidocytes
...
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Preserving DNA of an animal from hair
Unfortunately I lost an extraordinary and unique pet couple weeks ago. I would like to ask if it is possible to store the DNA for much later possible extraction (even decades) for whole genome ...
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How old is this Kodiak bear?
Apologies if this is off-topic, I couldn't think of a more relevant SE site to post this.
Wikipedia has the following picture of a captive Kodiak bear in (presumably) a zoo in Germany. How old is this ...
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Do female reptiles generally create new oocytes after birth?
I was trying to find the answer to this question through some online digging and all I can find are some articles about oocyte maturation in reproductive reptiles, but nothing explicitly stating that ...
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Why aren't there baleen whales at about the size of a dolphin?
The currently smallest baleen whale, pygmy right whale (Caperea marginata) under Neobalaenidae, is mature at about 6 meters, slightly smaller than an orca. However, I noticed that the length of ...
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Can a species be thought of as a system? [closed]
Is it possible to view a species as a system of survival and reproduction of genes?
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Is there any verified evidence for a 9.1-meter giant manta ray?
The giant oceanic manta ray (Mobula birostris) is surely one of the most fascinating underwater creatures, given its immense size. However, as with most big animals such as the giant squid or blue ...
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How to effectively remove lipids from insect samples without contaminating the mounting medium?
I am using a chloroform: methanol (2:1) solution as a lipid extractant for my insect cuticle sample (femur) mounted on UV glue. However, the method I am using is fairly rudimentary-
I wet a small ...
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What species is this insect found in Dublin?
Could you please help me with identifying the insect in the attached photos? It was found in a residential building in Dublin, Ireland. The length of the specimen seemed to be approximately 8-10 mm (...
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regarding cells present in connective tissue
we are told that connective tissue is composed of cells fibers and ground substance . the cells are
1 fibroblast
2 mast cells
3 macrophages
4 eosinophils
5 neutrophils
6 plasma b cells or just plasma ...
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Are there any organisms that keep their body *colder* than the environment?
Warm-blooded animals generate heat to stay warmer than the surrounding environment. Are there any that do the opposite, using a heat pump to cool down some part of their body to be cooler than the air ...
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