Subphylum Uniramia

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Subphylum Uniramia
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Class Chilopoda centipedes

• Body flattened in cross section
• Only 1 pair of legs per segment
• Long legs allow for faster movement
• Eat earthworms, cockroaches, etc.
• Have a pair of clawlike appendages that can
  inject venom into prey
• Stay in dark, moist places

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Class Diplopoda millipedes

• Have 2 pairs of legs on each body segment
• Short legs make them slow, but are strong for
  burrowing
• When threatened they will coil up and spray a
  noxious chemical
• Cross section is rounded
• Herbivores, living on decayed plant and animal
  matter
• Have strong sense of smell, but poor vision

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Class Insecta insects

• Characteristics
• Body has 3 parts head, thorax, abdomen
• Head has 1 pair of antennae
• Thorax has 3 pairs of jointed legs and one or two
  pairs of wings
• Abdomen is divided into 11 segments

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Class Insecta

• Classification
• Structural variations
• Physiological variations
• Behavioral variations

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Class Insecta

• Success of insects
• Live everywhere except the deep ocean
• Entomologist scientist who studies insects
• Benefit from the evolution of an exoskeleton and
  jointed appendages
• Adapt to new environments rapidly due to their
  short life span
• Size allows them to inhabit same environment and
  still avoid competition
• Wings allow for flight to different locations

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Class Insecta

• Insects and human society
• Eat crops
• Spread disease
• Pollinate 2/3 of worlds plants
• Food for birds, fish, etc.
• Recycle decayed matter