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!
Complete vs. Incomplete Metamorphosis
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
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