The organism pictured below would be classified into Phylum ____.

Phylum Annelida includes ____.

All worms are ____.

All worms are ____.

The ____ of worms will develop into muscle tissue.

All worms have a(n) ____.

All worms have ____.

Worms are cephalized, meaning they have a distinct ____.

All worms lack a distinct ____ system.

Flatworms are ____ flattened.

Organisms that are ____ lack an internal body cavity.

Organisms that lack two separate openings to their digestive system have a(n) ____ digestive system.

Organisms that have blood vessels to contain the fluid of their circulatory system have a(n) ____ circulatory system.

____ are usually monoecious. (Select all.)

____ have a complete digestive system. (Select all.)

Metameric organisms are ____.

____ are coelomate organisms.

In earthworms, the ____ will grind up their food.

____ muscles follow the circumference of an earthworm's body segments.

____ are epidermal hairs used by earthworms for underground movement.

Earthworms use their ____ to make mucus that captures fertilized eggs.

In earthworms, the clitellum is closest to the ____ end of the worm.

In an earthworm's digestive system, the ____ is positioned immediately BEFORE the gizzard.

The aortic arches are the simple ____ of an earthworm.