Kingdom animalia

Question 1

Parazoa

Answer 1

• lack true tissue

- Phylum Porifera: Sponges

Question 2

Eumetazoa

Answer 2

• have true tissues

- all phylum except porifera

Question 3

Radiata

Answer 3

• Radial symmetry: No right & left sides
• Diploblastic: two germ layers (endo & ecto)
• Phylum Cnidaria: Jelly fish, hydras

Question 4

Bilateria

Answer 4

• A dorsal (top) side and a ventral (bottom) side
• A right and left side
• Anterior (head) and posterior (tails) ends
• Cephalization: Concentration sensory equipment at anterior end; development of a head
• Triploblastic (3 germ layers: Ectoderm, mesoderm, endorderm)

Question 5

Germ layers

Answer 5

Form various tissues and organs of adult organism

Question 6

Ectoderm

Answer 6

• Covers surface of embryo
• Forms animal’s outer covering
• In some phyla, forms central nervous system

Question 7

Endoderm

Answer 7

• Inner germ layer
• Lines the developing digestive tract (or cavity)
• forms lining of the digestive tract, liver and lungs

Question 8

Mesoderm

Answer 8

• Only in bilatera
• located bewteen the ectoderm and endoderm
• Forms muscle, organs (between digestive tract and outer covering)