Chapter 13 Section Review

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Chapter 13Section Review
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ARTHROPODS

• Jointed appendages
• Segmented bodies
• Exoskeletons

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Insects

• Three body regions
• Head
• Antennae
• Eyes (Single or Compound)
• Mouth
• Thorax
• Three pairs of legs
• Sometimes one or two pairs of wings
• Spiracle
• Abdomen
• Reproductive structures
• Spiracles

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Arachnids

• Two body regions
• Cephalothorax
• Abdomen
• Four pairs of legs
• No antennae
• Many have venom glands, stingers or fangs

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Centipedes and Millipedes

• Long bodies
• Many segments and legs
• Antennae
• Simple eyes

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Crustaceans

• Crabs
• Crayfish
• Shrimp
• Barnacles
• Pill Bugs
• Water Fleas

• 5 pairs of legs
• Antennae
• Mandibles
• Swimmerets

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Answer to Question
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• What are the advantages and disadvantages of
  an exoskeleton?

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Advantages

• Prevents dehydration
• Supports and protects body

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Disadvantages

• Body outgrows exoskeleton
• Animal is vulnerable to predators while new
  exoskeleton hardens.

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Answer to Question
2

Compare and contrast the stages of complete
metamorphosis and incomplete metamorphosis.
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Complete Metamorphosis

• The insect begins as an egg.
• The egg develops into a larva.
• The larva develops into a pupa.
• The pupa develops into an adult.

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Incomplete Metamorphosis

• The insect begins as an egg.
• The egg develops into a nymph.
• The nymph molts several times and develops into
  an adult.

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Answer to Question
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• List four ways arthropods obtain food.

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Ways Arthropods Obtain Food

• Chewing
• Piercing
• Sucking
• Lapping up nectar

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Blood Sucking Tick
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Nectar Lapping Butterfly
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Bug Chewing Praying Mantis
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Answer to Question
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• Evaluate the impact of arthropods.
• Why are they important?

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Why are Arthropods Important?

• They are an important food source for other
  animals.
• They pollinate crops.
• They prey on harmful organisms.
• They are used in the medicine industry.
• They can also destroy crops, carry disease and
  destroy property.

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Answer to Question
5
Make an events chain concept map of complete
metamorphosis and of incomplete metamorphosis.
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Incomplete Metamorphosis
EGG
NYMPH
ADULT
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Complete Metamorphosis
EGG
LARVA
PUPA
ADULT