Echinoderms

Question 1

Echinoderm

Answer 1

A marine invertebrate

Question 2

Endoskeleton

Answer 2

An Internal Skeleton

Question 3

Pedicellariae

Answer 3

A defensive organ

Question 4

Madreporite

Answer 4

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

Question 5

Ring Canal

Answer 5

Circular water tube that surrounds the esophagus

Question 6

Arm/Ray

Answer 6

Appendage

Question 7

Radial Symmetry

Answer 7

Symmetry around the central axis

Question 8

Bilateral Symmetry

Answer 8

The Property of being divisible into symmetrical halves on either side of a unique plane

Question 9

Water Vascular system

Answer 9

A network of water vessels in the body

Question 10

Ambulacral Groove

Answer 10

parts that include the ossicles, plates, spines, and suckers

Question 11

Ossicles

Answer 11

A small piece of calcified material forming a part of the skeleton of an invertebrate animal

Question 12

Plyoric Caecum

Answer 12

Tubular pouch opening into the alimentary canal in the pyloric region of most fishes

Question 13

Pyloric stomach

Answer 13

Connects the stomach to the duodenum

Question 14

Cardiac stomach

Answer 14

A two chambered fore gut, a midgut with outpocketings called digestive glands or hepatopancreas and a hindgut and a rectum

Question 15

Ampullae

Answer 15

A cavity or the dilated end of a duct, shaped like a roman ampullae

Question 16

Gonads

Answer 16

an organ that produces gametes

Question 17

Central Disc

Answer 17

Where the arms radiate from

Question 18

Tube Feet

Answer 18

Large number of small felxible hollow appendages protruding through the ambulacral used either for locomotion or collecting food

Question 19

External Fertilization

Answer 19

Sperm unites with an egg in the open

Question 20

Regeneration

Answer 20

the action or process of formation of a new limb

Question 21

Sea Star

Answer 21

A marine echinoderm with five or more radiating arms

Question 22

Brittle Star

Answer 22

An Echinoderm that is related to the starfish with long thin flexible arms

Question 23

Sea Urchin

Answer 23

Spherical or flattened shell covered with spines

Question 24

Sand Dollar

Answer 24

A flattened sea urchin that lives partly buried in the sand feeding on detritus

Question 25

Sea Lillies

Answer 25

A sedentary marine echinoderm on a long jointed stalk with feather like arms to trap food

Question 26

Feather Stars

Answer 26

An echinoderm with a small dislike body long feathery arms for feeding and movement and short appendages for grasping the surface

Question 27

Sea Cucumbers

Answer 27

An echinoderm that has a thick wormlike body with tentacles around the mouth.

Question 28

Sea Daisies

Answer 28

unusual group f deep sea taxa