Animalia

Question 1

Porifera

Answer 1

1. Spicula
2. Spongin
3. No respiratory, digestive, circulatory

Question 2

Cnidaria

Answer 2

1. Nematocysts
2. Mouth surrounded by tentacles
3. Incomplete digestion

Question 3

Platyhelminthes

Answer 3

1. Dorst
2. Incomplete digestion
3. ?

Question 4

Nematode

Answer 4

1. Round body
2. Bilateral symmetry
3. Complete one way digestion

Question 5

Annelida

Answer 5

1. Divides into segments
2. Most have bristled
3. Bilateral symmetry

Question 6

Mollusca

Answer 6

1. Mantle and mantle cavity
2. Gills or lungs
3. Shell

Question 7

Arthropoda

Answer 7

1. Molt
2. Segmented body
3. Exoskeleton

Question 8

Echinodermata

Answer 8

1. Radial our bilateral symmetry
2. Water vascular system
3. Marine habitat

Question 9

Chordata

Answer 9

1. Dorsal nerve chord
2. Notochord to backbone
3. Pharyngeal slits