the grasshopper click here. arthropods insects there are more than 700,000 species that have been...
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The Grasshopper
Click here
Would you eat a grasshopper?
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Arthropods
InsectsThere are more than 700,000 species that have been
classifiedThey are the largest & most diverse group on earth
Insects have three body regionsHead, thorax, and abdomen
Masters of disguise
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Mouth parts
• Mandibles- holding food• Labrum- holding food• Maxillae- chewing food• Labium-holding food and tasting
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Head
• Antennae• Eyes ( simple)• Mouth ( adapted so they can chew plants)
• They have crop and gizzard for grinding food
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Thorax
• Three pair of legs (Legs are adapted for jumping to escape predators)
• One or two pair of wings– Some insects only have wings part of their life, or
not at all
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Abdomen
• Where the reproductive structures are found• Insects have an open circulatory system and
their blood DOES NOT carry oxygen• They have spiracles instead- where air enters
and waste gas leaves the body (oxygen & CO2)
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Kingdom Animalia- Phylum Arthropoda-
Class InsectaOrder Orthoptera
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Head
•Antennae (two, slender appendages)Compound eyes (2, large lateral)Ocelli (or simple eyes) - 3, small, between compound eyesMouth parts - Labrum (upper lip), mandibles (jaws) below the labrum, maxillae located behind the mandibles to help cut & hold food, and the lower lip or labium
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Tympanic membrane
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ABDOMEN
•Spiracles (small openings on the side of somites or body segments)Auditory Organs (two located laterally on the 1st body somite or segment)Ovipositor (on female)
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Ovipositor
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THORAX
•Legs (first 2 pairs are for walking & the last pair are for jumping)Wings (forewings have a leathery appearance & protect the hind wings)