Exam Iii - 4

Front 1

What do sea stars and humans have in common?

Back 1

Deuterostomes

Front 2

Deuterostome phyla - 2

Back 2

1. Echinoderms
2. Chordates

Front 3

Echinoderms means ________ _________.

Back 3

Spiny skin

Front 4

Echinoderm characteristics - 12

Back 4

1. Marine animals
2. Sessile or sedentary animals
3. Radial symmetry as adults but bilateral as larvae
4. Internal and external parts radiate from center (five)
5. Endoskeleton of hard calcareous plates
6. Tube feet
7. Gas exchange
8. Sexual reproduction
9. Regeneration of body parts
10. Surface covered with spines
11. Surface covered with small gills
12. Short digestive system

Front 5

Echinoderm sexual reproduction

Back 5

Separate males and females release their gametes into water.

Front 6

Echinoderm classes

Back 6

1. Sea Stars
2. Brittle Stars
3. Sea urchins and sand dollars (no arms)
4. Sea lilies
5. Sea cucumbers

Front 7

Chordate Characteristics - 4

Back 7

1. Notochord
2. Dorsal hollow nerve cord
3. Pharyngeal gill slits
4. Postanal tail

Front 8

Notochord

Back 8

A longitudinal, flexible rod, located between the gut and the nerve cord.
1. Chordates are named for this structure
2. Primitive chordates, notochord supports adult
3. Complex chordates, notochord is a complex skeleton

Front 9

Dorsal hollow nerve cord

Back 9

1. Unique to chordates
2. Other animal phyla have solid nerve cords that are located ventral to the gut
3. Comes from ectoderm

Front 10

Pharygeal slits - 4

Back 10

1. pairs of slits located on the sides of the pharynx
2.Water enters through mouth and out through gill slits
3. Filter feeding
4. Modified for gas exchange

Front 11

Muscular postanal tail

Back 11

tail like a cat

Front 12

Urochordata

Back 12

tunicates
1. Sessile adults
2. Filter feeders (siphons)

Front 13

Cephalochordata

Back 13

lancelets
1. Segmented muscles
2. Closely related to vertebrates

Front 14

Which can have long, movable spines?

Back 14

Echinoidea (sea urchins, sand dollars