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dyWhat’s That Spiky

Nut’s & Bolts

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How Many 100

What Echinoderms are eaten by humans?

Sea urchins and cucumbers

How Many 200

What is the name of the body of a sea urchin?

Test

How Many300

What body part on a sea star produces the tube feet by pumping water into them?

Ampullae

How Many 400

About how many species of Echinoderms are there?

6,500 species

How Many 500

What is the name of the body part that allows water into a sea star for the water vascular system?

Madreporite

What’s That100

The phylum Echinodermata translates into what?

Spiny Skin Animals

What’s That200

What species of marine mammals is able to prey on sea cucumbers despite their spines?

Sea Otters

What’s That300

A Pearl Fish is a small, slender fish that hides within the anus of a _____________. It comes out to feed but always returns to its host?

Sea Cucumber

What’s That400

Keyhole urchins have five slits that allow water to pass through, so they don’t get washed out of the sand by wave, what are they called?

Locules

What’s That500

What do we call the five sets of double rows that the flat tube feet emerge from on sand dollars?

Petaloids

Spiky100

What Echinoderm has a stalk that attaches it to the sea floor?

Sea Lillie

Spiky 200

Echinoderms have what type of symmetry when they are a larvae?

Bilateral

Spiky 300

What is the name of a sea star’s circulatory system?

Water Vascular System

Spiky 400

The ampullae secreate what on a sea star?

Tube Feet

Spiky 500

Sea stars and sea urchins belong to what classes?

Asteroidea = Sea Stars

Echinoidea = Sea Urchins

Nuts & Bolts100

What kind of digestive system do Echinoderms have?

Complete

Nuts & Bolts 200

What kind of circulatory system do Echinoderms have?

None, have a water vascular system instead.

Nuts & Bolts 300

What Echinoderms graze on algae?

Sea Urchins

Nuts & Bolts 400

Explain how sea cucumbers eat?

Suck up sand and digest any organic matter and then defecate clumps of sand.

Nuts & Bolts 500

What is the name of the echinoderm that has reduced test and enlarged locules to prevent it from getting washed away in

turbulent water??

Mexican Sand Dollar