Phylum Echinodermata

Question 1

What type of symmetry do echinoderms have

Answer 1

Pentaradial (5 rays)

Question 2

What does regeneration and autonomy mean

Answer 2

They can grow back limbs and discard injured ones

Question 3

What is their respiration like

Answer 3

Respiration by tube feet and palpulae

Question 4

Are they parasitic or free living

Answer 4

Free living

Question 5

Are they dioecious or monoecious

Answer 5

Dioecious

Question 6

Do they have a brain

Answer 6

No

Question 7

What animals are part of class asteroidea

Answer 7

Sea stars

Question 8

What animals are part of class ophiuroidea

Answer 8

Brittle stars

Question 9

What class are sea cucumbers a part of

Answer 9

Holothuroidea

Question 10

What class are sea lilies and feather stars a part of

Answer 10

Crinoidea

Question 11

What animals are part of class echinoidea

Answer 11

Sea urchins, sea biscuits, sand dollars

Question 12

Characteristics of class holothuroidea

Answer 12

Elongated, soft bodied, wiggle to move, crawl along sea floor

Question 13

Characteristics of class asteroidea

Answer 13

Broad legs, no clear distinction between legs and inner disk

Question 14

Characteristics of class ophiuroidea

Answer 14

Slender legs that are the same length, uses arms to move-not tube feet, arms have vertebrae, no palpulae

Question 15

Characteristics of class echinoidea

Answer 15

Shell like outside, usually has spikes, short spines, dermal ossicles

Question 16

Characteristics of class crinoidea

Answer 16

Filter feeders, attaches to rocks, feathery, stretch arms like flower pedals, many colored, spiny

Question 17

Order of the water vascular system

Answer 17

Madreporite, stone canal, ring canal, radial canal, lateral canal