Friday, December 31, 2010

Insects have 6 legs but do they have other appendages?

Insects are Arthropods, which means "jointed appendages". 
Besides the six legs, insects have other appendages which enable them to be the highly
adapted organisms they truly are. Antennae, located on the head, between the eyes, are
movable segmented appendages that serve a sensory function. They are used to perceive
chemical stimuli. Various external mouthparts are used for chewing and grinding the
food, eventually performing the function of ingestion. Two pairs of wings are outgrowths
of the body wall and can be manipulated by muscles for flight. Wings are located on the
thorax region. Appendages on the abdomen are for mating, such as the ovipositor. There
are cerci, non--reproductive appendages for tactile sensations. 

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