Phylum Proifera

Question 1

What are Porifera?

Answer 1

Sponges

Question 2

What are the characteristics of porifera? (there are 5)

Answer 2

• No organs
• No true tissues
• Cellular level organization
• Simplest animal
• has pinacocytes and choanocytes

Question 3

What are the 3 cell types of Porifera?

Answer 3

Pinacocytes: Protective outmost layer

Archaeocytes: Ameboid cells. in mesohyl

Choanocytes: “collar” calls (Flagellated)

Question 4

What are the 3 body forms in Porifera?

Answer 4

Asconoid: Choanocytes line spongocoel. Water flows from ostia to spongocoel and out through osculum

Syconoid: Choanocytes line radial chambers in body wall. water flows from ostia-radial chamber-spongocoel-osculum

Leuconoid: choanocytes in chambers dispersed throughout body. water flows from ostia-inhalant canal-choanocyte chamber-exhalant canal - osculum

Question 5

Porifera Reproduction?

Answer 5

Sexual and asexual