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Flashcards in Echinoderms Deck (19):
0

Echinodermata means

Spiny skin

1

Echinodermata is the only group of organisms that are

All confined to the marine world

2

Echinoderms have what type of symmetry

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

3

The hydrovascular system is used for what

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

4

Echinoderms have no what

Brain

5

Their nervous system consists of

A circumpolar ring with radial nerves extending into each arm

6

Coelom

Hollow body cavity

7

There are how many arms

5

8

An internal skeleton made of calcium carbonate

Endoskeleton

9

Calcium carbonate played that are fused together to form the shell

Ossicles

10

Where do Echinoderms live in the adult stage?

The benthic region

11

Sea urchins feed by

Scraping algae off rocks

12

Starfish feed by

Predation

13

Sea lilies feed by

Filter feeding

14

Sea cucumbers, brittle stars, and sand dollars feed by

Burrowing and feeding on suspended debris in the substrate

15

Their digestive system is

Well developed with a mouth intestines and most have an anus

16

Echinoderms have no organs therefore they have have no

Excretory system

17

Echinoderms are all dioecious and carry out reproduction how

With sexual external fertilization

18

Some Echinoderms reproduce

Monoeciously (hermaphroditic)