Exam 3 part 2

Question 1

what are the three major phyla for deuterostomia?

Answer 1

Hemichordata, Echinodermata, chordata.

Question 2

Hemichordata

Answer 2

acorn, worm and pterobranchs

Question 3

Echinodermata

Answer 3

sea urchins and sea stars

Question 4

Chordata

Answer 4

includes vertebrates and closely related invertebrate animals, such as sea squirts and lancelets.

Question 5

Pharynx

Answer 5

In Chordates, the region of the throat that connects the mouth and nasal cavity to the digestive system and invertebrates to the lungs

Question 6

Pharyngeal slits

Answer 6

A vertical opening separated from other slits by stiff rods of protein in the pharynx of chordates

Question 7

dorsal nerve cord

Answer 7

A nerve cord that develops in a location dorsal to the not chord this embryonic feature is unique to chordates.

Question 8

Water vascular system

Answer 8

Unique feature of echinoderms A series of fluid filled canals that permit bulk transport of oxygen and nutrients in echinoderms.

Question 9

Tube feet

Answer 9

In echinoderms small projections of the water vascular system that extend outward from the body surface and facilitate locomotion sensory perception, food capture, and gas exchange.

Question 10

Cephalochordates

Answer 10

A subphylum of chordata that shares key features of body organization with vertebrates but lacks a well developed brain and eyes has no lateral appendages , and does not have a mineralized skeleton. Amphioxus or the lancelets is the best known example

Question 11

Tunicates

Answer 11

A subphylum of chordata that includes about 3000 species of filter feeding marine animals, such as sea squirts and slaps.

Question 12

Vertebrates

Answer 12

A subphylum of Chordata, distinguished by a bony cranium that protects the brain and ( unless lost through evolution) a vertebral column also called craniates.

Question 13

Craniates

Answer 13

A subphylum of chordata, distinguished by a bony cranium that protects brain also called vertebrate

Question 14

notochord

Answer 14

In chordates a stiff rod of cartilage like tissue that runs along the back and provides support for the axis of the body.

Question 15

Vertebral column

Answer 15

A skeletal structure in vertebrates that functionally replaces the embryonic notochord that supports the body.

Question 16

Neural tube

Answer 16

In chordates a cylinder of embryological tissue that develops into a dorsal nerve cord

Question 17

Myotomes

Answer 17

In chordates any one of a series of segments that organizes the body musculature