AY Honors/Echinoderms/Answer Key

1

In what environment can echinoderms be found?

2

What does the word Echinodermata mean, the name that characterizes the echinoderms?

3

Name four characteristics of the phylum Echinodermata.

4

What kind of symmetry do the echinoderms have? What does this mean?

5

Name the main characteristics and give five examples of the classes of echinoderms:

5a

Asteroidea

5b

Echinoidea

5c

Ophiuroidea

5d

Holothuroidea

5e

Crinoidea

6

What do you do in the event of an accident with sea urchins?

7

In a practical class identify, discover and explain the function of the following structures:

7a

Starfish:

i

Ambulacral grooves or feet

ii

Madreporite plate

iii

Mouth

iv

Anus

7b

Sea urchins:

i

Aristotle's Lantern

ii

Spines

iii

Mouth

iv

Endoskeleton

8

Make a collection containing 20 pictures or photographs of different species of echinoderms. Include the common name, scientific name, family and order.

9

How do starfish feed?

10

Do some research about sea urchins and some species that have poison.