Echinoderms

Question 0

Echinodermata is the only group of organisms that are

Answer 0

All confined to the marine world

Question 1

Echinodermata means

Answer 1

Spiny skin

Question 2

Echinoderms have what type of symmetry

Answer 2

Pentane routs radial symmetry in the adult stage and bilateral symmetry in the larval sgage

Question 3

The hydrovascular system is used for what

Answer 3

Carry food to the mouth, locomotion, and open shells of bivalves it enables locomotion

Question 4

Echinoderms have no what

Answer 4

Brain

Question 5

Their nervous system consists of

Answer 5

A circumpolar ring with radial nerves extending into each arm

Question 6

Coelom

Answer 6

Hollow body cavity

Question 7

There are how many arms

Answer 7

5

Question 8

An internal skeleton made of calcium carbonate

Answer 8

Endoskeleton

Question 9

Calcium carbonate played that are fused together to form the shell

Answer 9

Ossicles

Question 10

Where do Echinoderms live in the adult stage?

Answer 10

The benthic region

Question 11

Sea urchins feed by

Answer 11

Scraping algae off rocks

Question 12

Starfish feed by

Answer 12

Predation

Question 13

Sea lilies feed by

Answer 13

Filter feeding

Question 14

Sea cucumbers, brittle stars, and sand dollars feed by

Answer 14

Burrowing and feeding on suspended debris in the substrate

Question 15

Their digestive system is

Answer 15

Well developed with a mouth intestines and most have an anus

Question 16

Echinoderms have no organs therefore they have have no

Answer 16

Excretory system

Question 17

Echinoderms are all dioecious and carry out reproduction how

Answer 17

With sexual external fertilization

Question 18

Some Echinoderms reproduce

Answer 18

Monoeciously (hermaphroditic)