Ch 32 Animal Devolpement Test 3

Front 1

Kingdom Animelia

Back 1

1. Multicellular and Eukaryotic
2. hetertrophy is by ingestion (eat other organisms or eat decomposing organic matteral)
3. Nervous and muscle tissue unqie to animals
4. typically sexual reproduction, motile sperm, non motile eggs, diploid, stage dominant

Front 2

Larva(e)

Back 2

free living sexually immature stage

Front 3

Animal king all monophyletic common ancester

Back 3

Colonial choanoflagellate

Front 4

Radial Symmetrical

Back 4

Can cut any way
Phylum Cnidaria - diploblastic -- endo, ecto
Phylum Ctenophora –

Top – Oral
Bottom – Aboral

Front 5

Bilateral Symmetry

Back 5

Triploblastic
Top – Dorsal Head- Anterior
Bottom – Ventral Tail – Posterior

Front 6

Cephalization

Back 6

Concentntration of sensory structures

Front 7

If bilaterial animal cephalization ...

Back 7

cephalization accurs at anterior end (head) because thats the way they move

Front 8

Starfish

Back 8

2 degree radially symmetry, start off bilaterial and devolp into radial. No true tissue

Front 9

Planaria

Back 9

moderatly cephallized, bilaterail, cerebal ganglion (brain), Ocellus (eye part),

Front 10

Coelom

Back 10

space between outer body wall and digestive track, cushin organs thus preventing injury, allow internail orgins to move and grow independent of the outter body wall.

Front 11

soft bodied animal

Back 11

Hydrostatic skeleton acts as support and rigidity

Front 12

acoelomate

Back 12

without coelom

Front 13

(Phylum Plathelminthes)

Back 13

flatworms/planaria, body filled with spongy mesoderm (parerchyma)
(Phylum Plathelminthes)

Front 14

Eucoelomate

Back 14

body cavity complety lined with mesoderm

Front 15

Pseudocoelomate

Back 15

not completly lined mesoderm, roundworms phylum (Nermatoda)

Front 16

Bilateria

Back 16

has deuterostomia and protostomes

Front 17

Protostomes

Back 17

Split into two clades: Clade Lophotrochozoa and Ecdysozoa

Front 18

Protostomes devolpement

Back 18

1. Mouth from blastopore
2. Spiral and determinate
3. Schizocoelous

Front 19

Deuterostome devolpement

Back 19

1. Anus from blastospore
2. Radial and indeterminate
3. Enterocoelous

Front 20

Protostomes devolpement

Back 20

Spiral - cleavage where the blastomers do not form layers. Determinate - the fate of each embroynic cell is established early. Schizocoelous - solid masses of mesoderm split and form coelom

Front 21

Deuterostomes devolopment

Back 21

Radial - blastomeres form layers, alligned. Indeterminate - the fate is not determined embroynic cell contains compacity to devolp into a complter embry if isolated. Enterocoelous - folds of archenteron form coelom.

Front 22

Only two left in Deuterostomia

Back 22

Echinodermata, Chordata

Front 23

Protostomes

Back 23

Clade Lophotrochozoa and Ecdysozoa.

Front 24

Ecdysozoa

Back 24

refers to a characteristic shared by nematodes, arthropods. These animals secrete external skeletons; the stiff covering of a cricket is an example. As the animal grows, it molts, squirming out of its old exoskeleton and secreting a new, larger one. The shedding of the old exoskeleton is called ecdysis, the process for which the ecdysozoans are named

Front 25

Lophotrochozoa

Back 25

refers to two different structures observed in animals belonging to this clade. Some animals, such as ectoprocts, develop a structure called a lophophore, a crown of ciliated tentacles that function in feeding. Other phyla, including annelids and molluscs, go through a distinctive larval stage called the trochophore larva—hence the name lophotrochozoan.

Front 26

Trichophore larvae

Back 26

Annelids and Molluscs

Front 27

Lophophorates with lophophore (ciliated tentacles)

Back 27

feeding structures

1. Ectoprocta
2. Phoronida
3. Brachiopoda

Front 28

Lophophore

Back 28

1. Ectoprocta
2. Phoronida
3. Brachiopoda

Front 29

trochophore larva

Back 29

four phyla that undergo this larval stage: Annelida, Mollusca, Nemertea, and Platyhelminthes