Porifera and Cnidaria

Question 1

Animal Kingdom: Major Characteristics

Answer 1

1. Eukaryotic
2. Heterotrophic
3. Multicellular
4. No cell wall
5. Nervous and muscle tissues (in most)

Question 2

Parazoa

Answer 2

(lack tissues): Porifera

Question 3

Eumetazoa

Answer 3

(possess tissues): All other phyla

Question 4

No symmetry

Answer 4

Porifera

Question 5

Radiata

Answer 5

Cnidaria

Question 6

Bilateria

Answer 6

Platyhelminthes, Nematoda, Mollusca, Annelida, Arthropoda, Echinodermata (as larvae)

Question 7

Diploblastic

Answer 7

Cnidaria

Question 8

Triploblastic

Answer 8

All other Bilateria phyla

Question 9

Acoelomate

Answer 9

Platyhelminthese

Question 10

Pseudocoelomate

Answer 10

Nematoda

Question 11

Coelomate

Answer 11

Mollusca, Annelida, Arthropoda, Echinodermata, Chordata

Question 12

Protostome

Answer 12

Mollusca, Annelida, Arthropoda

Question 13

Deuterostome

Answer 13

Echinodermata, Chordata

Question 14

Invertebrate

Answer 14

All animals except subphylum Vertebrata of phylum Chordata

Question 15

Vertebrate

Answer 15

Only subphylum Craniata (except Class Myxini

Question 16

Porifera

Answer 16

A collection of cells – relatively independent
Suspension feeders – spongocoel and osculum
Cell types
Choanocytes – collar cells
Amoebocytes – pseudopodia – take up food from water and choanocytes – produces spicules CaCO3, SiO2 and spongin (protein)
Reproduction – sexual – hermaphrodic

Question 17

Phylum Porifera - Class Calcarea

Answer 17

Calcareous Sponge

Spicules – CaCO3

Question 18

Phylum Porifera - Class Hexactiellida

Answer 18

Glass Sponge

Spicules – SiO2

Question 19

Phylum Porifera Grantia

Answer 19

Calcareous Sponge

Spicules – CaCO3

Question 20

Phylum Porifera – Class Demospongia

Answer 20

Bath Sponge

Spicules - Spongin

Question 21

Phylum Cnidaria Class Hydrozoa

Answer 21

– polyp body form – fresh water and marine - free living and colonial – polyp dominate body form – microscopic medusa - cindocytes/nematocysts – Hydra and Physalia (Portuguese man of war

Question 22

Phylum Cnidaria Class Scyphozoa

Answer 22

polyp and medusa body form – medusa dominate body form – polyp reduced or absent – all marine - cindocytes/nematocysts – Aurelia (Moon Jellyfish)

Question 23

Phylum Cnidaria Class Cubozoa

Answer 23

box shaped medusa – no polyp body form – all marine - cindocytes – deadly poison – complex eyes – Box Jellyfish

Question 24

Phylum Cnidaria Class Anthozoa

Answer 24

• polyp body form – medusa stage absent – marine – many colonial – includes sea anemones and corals -Metridium (Sea Anemone), Corals