Life Cycles

Tiffany Alcorn

What is a life cycle?

A life cycle is the series of changes in the life of an organism, including reproduction.


Big image

Animal Life Cycles

Most animals including fish, mammals, reptiles and birds have very simple life cycles:

  • they are born (either alive from their mother or hatched from eggs)
  • they grow up

These animals have three stages -- before birth, young and adult. The young are typically similar to the parent, just smaller. The young slowly "grow" to become adults.


Big image

What is metamorphosis?


Metamorphosis is a process some animals go through to become adults. It is a series of physical changes. Metamorphosis is especially common in insects. Genes and chemicals called hormones control the process.

Complete Metamorphosis

Big image

Incomplete Metamorphosis

Big image