This venomous animal stings using petal like pedicellariae:

The delicate hollow tubes that project from the coelomic cavity to the exterior, through which gas exchange and waste excretion take place are called:

The side of an echinoderm opposite of the mouth is called the:

Echinoderms are considered:

How many extinct classes of echinoderms are there?

What is the name of the long digestive glands in each arm of a sea star?

When a sea cucumber expels its internal organs to confuse predators it is called:

What is the nickname for areas that have been overgrazed by sea urchins and made devoid of kelp?

The fused, rigid endoskeleton of echinoids is called a(n):

Sea stars reproduce by this method in which the eggs and sperm are released into the water from the male and female at the same time:

Which echinoderm class name means "snake tail"?

Which echinoderm class name means "water polyp"?

The water vascular system is best decribed as what kind of system?

Toxic, sticky, white strands ejected when a sea cucumber is irritated are called:

What type of symmetry is seen in adult echinoderms?

What type of symmetry is seen in larval echinoderms?

Echinoderms are bottom-dwelling animals that live on the ocean floor, the term we use

for this is:

The small, hard, white pieces inside of a sand dollar are its:

The jaw-like mechanism that echinoids use to grind their food is called:

What is the nickname for areas that have been overgrazed by sea urchins and made devoid of kelp?