INSECTS Entomology Notes #11, 10/1/07. The Insect Body Arthropods Three Body Sections –Head (eyes,...
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Transcript of INSECTS Entomology Notes #11, 10/1/07. The Insect Body Arthropods Three Body Sections –Head (eyes,...
INSECTSEntomology
Notes #11, 10/1/07
The Insect Body• Arthropods• Three Body Sections
– Head (eyes, antennae)– Thorax (wings and legs)– Abdomen (internal organs)
• Six legs• One pair of antennae• One or two pairs of wings• 2 Compound eyes (many lenses) to see
movement• Small simple eyes to see light/darkness• Breathe through tubes near exoskeleton
From Egg to Adult• Complete Metamorphosis
Examples: beetles, butterflies, flies, ants– Egg– Larva– Pupa– Adult
• Gradual MetamorphosisExamples: grasshoppers, termites, cockroaches, dragonflies
– Egg– Nymph– Adult
How Insects Feed• Eat plants, plant parts, paper, animals,
blood, dead bodies, animal droppings
• Mouth is adapted to get food– Bees have a bristly tongue– Mosquitoes have a sharp mouth to suck blood
Defending Themselves
• Flee danger (fly away, run)
• Painful stings
• Smell or Taste Bad
• Camouflage
• Resemblance to other animals
Project #2: Insect Poster• Create a “Wanted: Dead or Alive” Poster• Letter size (8.5 x 11); Colored• Include such information as the
– Insect’s scientific and common name– Insect’s known occupation/characteristics– insect's natural habitat, – what the insect needs to stay alive– why the insect is "wanted"
• Due Date: Friday, October 5, 2007• Example: ..\wantedposter2.pdf
Assignment #20: Metamorphosis
• Copy “Exploring Insect Metamorphosis” page 65 (Labels/Descriptions)
• Questions:1. How is a firefly’s metamorphosis different
from a grasshoppers?
2. When does the grasshopper acquire wings?
3. What do adults do that larvae and nymphs do not?