Please match the Arthropod subphylum or class to the description. two pairs of antennae [ Choose ] [ Choose] Нехарoda no antennae Chelicerata Crustacea Myriapoda many tagmata and appendages [ Choose ] six legs and usually wings [ Choose ] chelicerae, pedipalps, and four pairs of walking legs [ Choose ] crayfish [ Choose ] centipede [ Choose ] spider [ Choose ] > > > > > >
Microscopic examination
The analysis of minute organisms, cellular organization of any biological structure, and composition of body fluids with the help of a microscope is known as microscopic examination. The magnification of specimens or samples under study helps in attaining a clearer picture of it.
Gram Staining
Named after Hans Christian Gram, a Danish bacteriologist, Gram stain is one of the most powerful staining techniques within microbiology. This technique was introduced in 1882 to identify pneumonia-causing organisms. The Gram staining technique uses crystal violet or methylene blue as primary staining colors to distinguish gram-positive from gram-negative organisms. Under a microscope, the gram-positive organisms appear purple-brown, retaining the primary color. Gram-negative organisms appear pink or red as they do not acquire the color of the primary stain.
![Please match the Arthropod subphylum or class to the description.
two pairs of antennae
[ Choose ]
[ Choose ]
Hexapoda
no antennae
Chelicerata
Crustacea
Myriapoda
many tagmata and appendages
[ Choose]
six legs and usually wings
[ Choose ]
chelicerae, pedipalps, and four pairs of
walking legs
[ Choose ]
crayfish
[ Choose ]
centipede
[ Choose ]
spider
[ Choose ]
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Arthropoda is a largest phylum in Animal kingdom.
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