Chapter 14

Question 1

True/False

The water vascular system of sea stars opens to the outside through the madreporite

Answer 1

True

Question 2

A complex chewing apparatus found in many urchins is the ________

Answer 2

Aristotle’s lantern

Question 3

True/False

The ambulance also grooves of asteroids are closed

Answer 3

False

Question 4

Acornwoms

Answer 4

Have gill pores and gill slits

Question 5

True/False

Hemichordates show relationships to both the echinoderms and the chordates

Answer 5

True

Question 6

Minute, pincer like _______ are found on the surfaces of many sea stars

Answer 6

Pedicellariae

Question 7

On the inner end of each tube foot is a muscular sac called an ______

Answer 7

Ampulla

Question 8

True/False

Echinoderms have the ability to osmoregulate regardless of the salinity of the water and are thus found in marine and brackish waters

Answer 8

False

Question 9

Sea stars have light sensitive organs, the _____, at the ends of their arms

Answer 9

Eyespot

Question 10

The ophiuroids have no

Answer 10

All of the above

• papulae
• anus
• pedicellariae

Question 11

The larvae of Echinoderms have _____ symmetry

Answer 11

Bilateral

Question 12

A unique characteristic of Echinoderms is

Answer 12

All of the above

• pedicellariae
• the endoskeleton of plates and ossicles
• the water-vascular system

Question 13

Sea stars

Answer 13

Use their tube feet for locomotion