Chapter 29

Question 0

Madreproite

Answer 0

Echinoderms the disk shaped opening which water flows in and out of the water vascular system

Question 1

Ampulla

Answer 1

Enchinoderms the round muscular structure on the tube feet

Question 2

Pedicellaria

Answer 2

Pincer like appendages on Echinoderms used for protection and cleaning

Question 3

Ray

Answer 3

Long taped arms of some Echinoderms that are covered with short rounded spines

Question 4

Tube foot

Answer 4

Echinoderms hollow thin walled tubes that end in a suction cup part of water vascular system also used for locomotion

Question 5

Water vascular system

Answer 5

In Echinoderms the hydraulic system that operates under water pressure aids in gas exchange locomotion and excretion

Question 6

Dorsal hollow nerve cord

Answer 6

Nerve cord found in all chordates that forms the spinal cord and brain

Question 7

Pharyngeal pouch

Answer 7

Paired openings located in the pharynx behind the mouth of a chordate embryo

Question 8

Notochord

Answer 8

Long semigrid rodlike structure found in all chordate embryo that is located between the digestive system and the dorsal hollow nerve cord