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The phylum Arthropoda is the largest and probably the most diverse phylum in
the animal kingdom. Its members, which form about 75 percent of the known
animal species, differ widely in anatomy, physiology, behaviour, and habitat.
The six-legged larvae may pass through several stages (protonymph,
deutonymph, tritonymph), which usually resemble the adults. Body Adult structure
. The success of the arthropods derives regions and from the presence of an
Arthropod hormones control colour change, retinal pigment migration, growth,
Bolting, changes in body form (metamorphosis), and soocual development.
Arthropods may develop poison glands that are associated with a variety s5f
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This is the 198215th Edition, in two halves, with the Macropaedia and the Micropaedia. First published in 1768, the publisher is the oldest English-language encyclopedia still in print. Two Scottish ... Read full review