Animal Reproduction and Behavior

Sexual reproduction requires a mate.

• True

• False

Offspring from asexual reproduction have different DNA than the parent(s).

• True

• False

A(n) polyp is a cnidarian body form that looks like an open umbrella.

• True

• False

Answer explanation

A medusa is a cnidarian body form that looks like an open umbrella.

Internal fertilization occurs inside the female organism’s body.

• True

• False

The length of time between fertilization and birth is called the fertilization period.

• True

• False

Answer explanation

The length of time between fertilization and birth is called the gestational period.

             reproduction requires only one parent organism.

• fertilization

• sexual

• asexual

• water

Most vertebrates and most invertebrates reproduce     .

• sexually

• water

• asexually

• budding

Sponges reproduce asexually when a new sponge grows from a parent and breaks off in a process called ______.

• fertilization

• water

• sexually

• budding

             may occur either inside or outside the female organism’s body.

• fertilization

• sexually

• water

• budding

External fertilization usually occurs in water so that the egg and sperm cells do not dry out.

• True

• False