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Animal Life Cycles. Identify the different stages that animals go through in a life cycle. Compare the life cycles of different kinds of animals. Adult -the stage of an animal’s life cycle when it reproduces. Egg -a structure containing food that young animals need in order to grow.

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animal life cycles

Animal Life Cycles

Identify the different stages that animals go through in a life cycle.

Compare the life cycles of different kinds of animals.

vocabulary

Adult-the stage of an animal’s life cycle when it reproduces.

  • Egg-a structure containing food that young animals need in order to grow.
  • Hatching- the process by which an animal breaks out of an egg.
  • Larva-a young insect that has just hatched.
  • Life Cycle- the stages through which animals grow, change, reproduce, and die.
  • Metamorphosis- a process by which an organism’s body changes form.
  • Pupa- the stage in which an insect is changing into an adult.
  • Tadpole- a young frog that breathes with gills.
Vocabulary
what are some animal life cycles

Different types of animals change in different ways. Some animals are born looking like their parents. Others are not. These animals might change shape or color as they grow. They may even grow new structures. The way an animal changes with age is part of its life cycle.

What are some animal life cycles?
metamorphosis

Some animals change shape through a process called metamorphosis. Amphibians and most insects go through metamorphosis. Their life cycle begins with an egg. Eggs contain food that young animals need. Most have a shell that protects the animal.

Metamorphosis

http://www.youtube.com/watch?v=gHn4-L2C3t0

http://www.youtube.com/watch?v=R5QH3bGF4uU

reptiles fish birds

Reptiles, fish, and birds have similar life cycles. Most of these animals lay eggs. Reptiles lay eggs on dry land. Fish lay eggs in water. Birds often build nests to protect their eggs. An animal grows inside the egg. Young reptiles, fish, and birds do NOT go through metamorphosis.

Reptiles, Fish, & Birds

http://www.youtube.com/watch?v=TGoayx3Hvo4

slide6

Reptiles, Fish, & Birds

In time, young reptiles, fish and birds grow into adults. Now they can reproduce and have young of their own. Most reptiles and fish do not look after their young. The young can find food on their own. Birds often raise their young until the young can fly and find food for themselves.

http://www.youtube.com/watch?v=5DqjsWsY8-g

mammal life cycle

Mammals do not hatch from eggs. Young mammals are born live. They look much like their parents from the start. Adult mammals feed and care for their young. As they grow, young mammals lose fat and grow stronger.

Mammal Life Cycle
review

Main Idea: Describe the life cycles of two different animals.

  • Vocabulary: What is metamorphosis?
  • Sequence: Name the stages in a sea turtle’s life cycle.
  • Critical Thinking: Do you go through metamorphosis? How do you know?
  • An iguana’s life cycle would be most like a…
  • Turtle
  • Cheetah
  • Fly
  • Bear
Review