Echinoderms- Ophiuroidea

Question 0

Ophiuroidea has the largest in

Answer 0

Number of species and most abundant

Question 1

Ophiuroidea contains

Answer 1

Brittle stars, serpent stars, and basket stars

Question 2

Ophiuroidea have what body structure

Answer 2

Long slender arms and a well defined central disc

Question 3

In Ophiuroidea ambulacral grooves are

Answer 3

Closed and have no Prdicellariae or papulae

Question 4

Highly flexible arms allow these organisms to be the most

Answer 4

Mobile in the phylum

Question 5

Muscles in each arm contract to allow them to

Answer 5

Crawl rapidly

Question 6

Ophiuroidea contain no ampulla and get food by

Answer 6

Using their arms to take it into their mouthes

Question 7

Ophiuroidea feed on

Answer 7

Bottom detritus and small animals like worms and crustaceans

Question 8

How do they catch good

Answer 8

They lift their arms

Question 9

Basket stars feed by

Answer 9

Rollin up into a ball and attacking their prey

Question 10

Ophiuroidea have no

Answer 10

Intestine or anus

Question 11

Some species can actively pump water through

Answer 11

Internal cilia

Question 12

Gas exchange occurs through

Answer 12

5 pairs of bursar open toward the oral surface by genital slits

Question 13

These animals can automize their arms to

Answer 13

Free themselves from predators