Larva changes to an adult inside this hard case:

The immature stage that emerges from the egg during complete metamorphosis:

A life cycle with 4 very distinct growth stages is called ___________________ metamorphosis.

The joining of egg and sperm cells outside the body:

The immature stage that emerges from the egg during incomplete metamorphosis:

A life cycle with 3 growth stages:

A series of distinct growth stages:

The joining of egg and sperm cells inside the body:

Butterflies, moths, and beetles go through _______________________ metamorphosis.

Reptiles and birds lay eggs covered by ______________________________.

Their eggs contain an embryo, a watery fluid, and a food source, the _____________________.

Land animals rely on _____________________ fertilization.

Sexual reproduction of animals begins when egg and ________________ cells unite.

When most animals are born, they look like their parents. Other animals go through a series of stages called _______________________.

Fish and frog embryos develop inside soft eggs. The eggs are somewhat protected by a(an) ________________________.

Fish and amphibian eggs are fertilized outside the female's body, a process called _________________ fertilization.

After egg cells are fertilized, they develop into _________________.

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