The process in which an unfertilized egg develops into a complete individual

The unequal division of an organism causing an outgrowth which may eventually fall off and form into a new organism

When the body of the organism breaks into two or more parts, each of which will form a new organism

Wound healing mechanism and type of asexual reproduction; when a piece of the organism is detached, it can grow and sometimes develop into a completely new individual

Animals with three germ layers

Animals with two germ layers

Describes animal species having separate sexes

Describes animal species that have both male and female reproductive organs in same organism

Requires only one parent

Best suited for animals that living in an unstable, changing environment

Involves the union of gametes

Produces offspring that are genetically identical

Occurs in bacteria, unicellular eukaryotes, and in many invertebrate phyla

May cause animals to have to change their usual pattern of activity

Used by many sessile organisms

Can sometimes lead to deadly competition between males

Soon after fertilization, the zygote undergoes a series of rapid cell divisions. This is called

The solid ball of cells that results from the dividing zygote is called

During cleavage, each cell in the embryo is called a

The stage that results in three germ layers and a primitive gut is the

Radial cleavage is found primarily in which group?

Early in cleavage, a cell breaks off and becomes isolated. It grows into an entire separate individual. This is an example of

Known as the "first mouth", the blastopore will become the mouth in

Most protostomes show this type of coelom formation where a band of mesoderm splits to form the:

If you divided a radially symmetrical animal along any plane through its central axis, you would end up with:

If you divided a bilaterally symmetrical animal through its sagittal plane, you would end up with:

Which of the following animals is NOT radially symmetrical?

Which of the following shows the correct sequence?

The embryonic layer that forms the excretory and reproductive systems is the:

The embryonic layer that forms the skin and nervous tissue is the:

The animal’s digestive tract forms from the:

The embryonic layer that forms the circulatory and musculoskeletal systems is the:

Animals with bilateral symmetry find food and mates and avoid predators more efficiently

Social insects, such as wasps, bees, and ants, often use this type of reproduction:

Simultaneous hermaphrodites are animals that:

The male gonad which produces sperm is the

The female gonad which produces eggs is the

The union of male and female gametes to form a zygote is called

A sexual union to facilitate the reception of sperm by a female is

The hollow, fluid-filled ball of cells that forms during embryological development is

The fluid-filled cavity inside the hollow ball of cells is called the

A sea anemone’s gastrovascular cavity is an example of a

Which of the following is considered a protostomes:

A true body cavity completely surrounded by mesoderm is

The majority of animals on the planet

Clownfish start out their lives as males, and then change into females later in their development. This is called

A is...

B is...

D is...