Lab Ex 40 Survey of the Animal Kingdom - Echinodermata, Hemichordata, & Chordata

Question 0

Protostomes

Answer 0

Annelids, mollusks, & arthropods; blastopore gives rise to mouth

Question 1

Deuterostomes

Answer 1

Blastopore gives rise to anus

Question 2

Ossicles

Answer 2

Internal skeleton of Echinoderms made of calcareous plates called these, usually with spines protruding through a thin layer of skin

Question 3

Water vascular system

Answer 3

Echinoderms have this consisting of a series of coelomic water-filled canals with hollow projections called tube feet

Question 4

Tube feet

Answer 4

Hollow projections of the water vascular system that help move Echinoderms

Question 5

Aboral

Answer 5

Anus of sea star on this upper surface

Question 6

Dermal gills

Answer 6

Respiration by diffusion that surrounds the blunt spines of sea stars

Question 7

Pedicellariae

Answer 7

Pincerlike structures of Echinoderms used to remove debris from the surface

Question 8

Madreporite

Answer 8

Sieve connecting the water vascular system with the environment (Echinoderms)

Question 9

Ambulacral grooves

Answer 9

Where tube feet protrude from

Question 10

Test

Answer 10

Ossicles are fused into a solid shell called this

Question 11

Aristotle’s lantern

Answer 11

Small internal structure of 5 teeth (sea urchins & sand dollars)

Question 12

Tentacles

Answer 12

Modified tube feet of sea cucumbers

Question 13

Hemichordata

Answer 13

Share 2 features with chordates - dorsal nerve cord, part of which is hollow, & pharyngeal slits

Question 14

Pharyngeal slits

Answer 14

Openings in the throat that filter water that has entered through the mouth

Question 15

Acorn worms

Answer 15

Soft-bodied marine animals that burrow in sand or mud; bodies are fleshy & contractile and consist of a proboscis, a collar, & a trunk

Question 16

Chordates

Answer 16

Characterized by a dorsal hollow nerve cord, a notochord, pharyngeal slits, & a postnatal tail

Question 17

Atrium

Answer 17

After water passes by the arches it moves into a surrounding chamber called this (in lancelets)

Question 18

Atriopore

Answer 18

Water leaves the bodies of lancelets through this

Question 19

Ammocoete

Answer 19

Larva of lamprey

Question 20

Buccal funnel

Answer 20

Mouths of agnathans is at the center of this round structure & is armed with horny teeth & a rasping tongue

Question 21

Endoskeleton

Answer 21

Cartilaginous skeleton of sharks, skates, & rays

Question 22

Lateral line

Answer 22

Runs along each side of the bodies of sharks, skates, & rays & contains sensory cells to detect slight vibrations

Question 23

Operculum

Answer 23

Gills of bony fishes are protected by a movable gill cover called this

Question 24

Lateral-line system

Answer 24

Along each side & branching over the heads of most fishes is this, consisting of sensory pits in the skin; pits detect water currents & predators or prey that may be moving near the fish

Question 25

Tadpole

Answer 25

Aquatic larval stage of amphibians

Question 26

Chorion

Answer 26

Outermost membrane of reptile eggs

Question 27

Amnion

Answer 27

Encases the developing reptile embryo within a fluid filled cavity

Question 28

Yolk sac

Answer 28

Provides food from the yolk for the embryo via blood vessels connecting to the embryo’s gut (reptiles)

Question 29

Allantois

Answer 29

Surrounds a cavity into which waste products from the embryo are excreted

Question 30

Mammary glands

Answer 30

Mammals nourish their young with milk produced by these of the mother