Survey
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Insects (the rulers of Animalia!) -Class: Insecta -Largest group of arthropods -More than 1 million species have been identified! -Live almost anywhere (except oceans) General Insect Anatomy -3 body regions = head, thorax, and abdomen -Antennae (have a pair) = sensory structures used for touch, taste, and smell -3 pairs of legs (6 total) -usually have wings -spiracle – opening to air tubes, used for breathing -tympanum – hearing organ used in some insects Let’s Take A Closer Look… Using the dissecting scope, look at the ants and point out the 3 body segments & other unique features! Insect Development • Metamorphosis – series of developmental changes of an organism Complete vs. Incomplete Metamorphosis (Egg, Larva, Pupa, Adult) (Egg, Nymph, Adult) Ecological and Human Importance • Many plants require insects for their reproduction • Some insects are decomposers • Insects are important part of food webs • Some insects transmit diseases to humans • Some insect destroy crops