Life Cycles

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Life Cycles
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A. Life Cycle

• A life cycle is a behavior or stage that occurs
  once in a lifetime. It is repeated generation
  after generation.
• ALL animals have a life cycle

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B. Mammals

• 1. White-tailed Deer
• Fertilized Egg Embryo Fetus Fawn
  Adult
• 2. Bobcat
• Fertilized Egg Embryo Fetus
  Kitten Adult

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C. Birds

• 1. Pheasant
• Fertilized Egg Embryo Fetus Chick
  Adult
• Review What are the first three stages of ANY
  mammal life cycle?
• Fertilized Egg and Embryo

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D. What is a larva?

• A larva is an immature stage that looks different
  than an adult

Beetle larva
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E. Amphibians

• 1. Frog
• Fertilized Egg Larva (tadpole) Adult
• Review A larva is a(n)
• A. Immature stage that looks like an adult
• B. Immature stage that looks different than an
  adult
• C. Just plain childish and immature

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• F. What is a pupa?
• A dormant or resting stage to get through winter

• G. What is a Nymph?
• A stage that looks like the adult but has no wings

Dragonfly Nymph caught at Hidden Pond
Monarch Butterfly Pupa
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H. Insects

• 1. Monarch Butterfly
• Fertilized Egg Larva Pupa Adult
• 2. Dragonfly
• Fertilized Egg Nymph Adult

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Review

• A toads life cycle is similar to a frog.
  Predict the life cycle of a toad.
• __________ _________ Adult
• 1 2
• 1- Fertilized Egg
• 2- Larva (tadpole)