echinoderms

Question 1

Echinoderm

Answer 1

marine animals

Question 2

Endoskeleton

Answer 2

internal skeleton

Question 3

Pedicellariae

Answer 3

defensive organ like a minute pincer present in large numbers on an echinoderm

Question 4

Madreporite

Answer 4

perforated plate by which the entry of seawater into the vascular system of an echinoderm is controlled

Question 5

Radial canal

Answer 5

allow movement of tentacles

Question 6

Ring canal

Answer 6

canal ring is the name given to a series of canals that make a complete loop

Question 7

Arm / Ray

Answer 7

allow movement and ability to guide themselves

Question 8

Radial Symmetry

Answer 8

symmetry around a central axis

Question 9

Bilateral Symmetry

Answer 9

divisible into symmetrical halves on either side

Question 10

Water Vascular System

Answer 10

for locomotion, food and waste transportation, and respiration

Question 11

Ambulacral Groove

Answer 11

parts that include ossicles, plates, spines, and suckers that go from the mouth to the end of the ray

Question 12

Ossicles

Answer 12

They form part of the endoskeleton and provide rigidity and protection

Question 13

Pyloric stomach

Answer 13

pyloric stomach has two extensions into each arm

Question 14

Pyloric caeca

Answer 14

These are elongated, branched hollow tubes that are lined by a series of glands, which secrete digestive enzymes and absorb nutrients from the food.

Question 15

Cardiac Stomach

Answer 15

consists of a mouth; an esophagus; a two-chambered foregut; a midgut with outpocketings, hepatopancreas; and a hindgut

Question 16

Ampullae

Answer 16

bulb-shaped structures located above the tube feet

Question 17

Gonads

Answer 17

reproductive gland that produces reproductive cells

Question 18

Central Disc

Answer 18

Starfish have a central disk that is not marked off from the unbranched arms

Question 19

Tube Feet

Answer 19

function in locomotion, feeding, and respiration

Question 20

External Fertilization

Answer 20

fertilizing an egg outside the females body

Question 21

Regeneration

Answer 21

ability to regrow parts of the body previously lost

Question 22

Sea star

Answer 22

tis a starfish

Question 23

Brittle star

Answer 23

like a starfish but are transparent

Question 24

Sea urchin

Answer 24

spiky sea ball

Question 25

Sand dollar

Answer 25

flattened, burrowing sea urchins

Question 26

Sea lilies

Answer 26

cronoid

Question 27

Feather stars

Answer 27

cronoid

Question 28

Sea cucumbers

Answer 28

hey are marine animals with a leathery skin and an elongated body containing a single, branched gonad

Question 29

Sea daisies

Answer 29

Sea daisies make up an unusual group of deep-sea taxa