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Insect Morphology and SystematicsCLASSIFICATION OF PHYLUM ARTHROPODA UPTO CLASSESInsect Morphology and SystematicsCLASSIFICATION OF PHYLUM ARTHROPODA UPTO CLASSES
& POSITION OF
INSECTS IN ANIMAL KINGDOM AND ITS RELATIONSHIP WITH OTHER ARTHROPODA
Insects are invertebrates grouped in the phylum Arthropoda (Subphylum : Uniramia)
Characters of the Phylum Arthropoda
: (Arthro-joint, poda-foot)
i.
Segmented body
ii.
Segments grouped into 2 or 3 regions known as Tagmosis
iii.
Renewable chitinous exoskeleton
iv.
Grow by moulting
v.
Bilateral symmetry
vi.
Body cavity filled with blood-Haemocoel
vii.
Tubular alimentary canal with mouth and anus
viii.
Dorsal heart with ostia
ix.
Dorsal brain with ventral nerve cord
x.
Striated muscles
xi.
No cilia
xii.
Paired segmented appendages
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