An animal with a body cavity completely surrounded by mesoderm is a pseudocoelomate.

What is the order of cell layers in the gastrula starting from the inner layer

What is the lighter under surface of a frog called?

Flatworms tend to be smooth and dry.

Flame cells move water and nutrients from the body of a flatworm.

Which is true of both flatworms and roundworms?

Which structures are only found in parasitic flatworms?

Earthworms exchange carbon dioxide through the walls of a complex respiratory tube system.

Squids move oxygen and nutrients through a closed circulatory system.

Which structure secretes the coating the produces the pearl in an oyster?

Which structure PHYSICALLY breaks down food in an earthworms digestive tract?

All insects have three body segments, antennae, three pairs of legs, and wings,

An arthropod is highly vulnerable to predators after it has just molted.

Which characteristic do annelids and arthropods share?

What is the correct order for the life cycle of an insect with complete metamorphosis?