Porifera (Sponges)

Question 1

porifera

Answer 1

sponges!! suspension feeding, phagocytosis

Question 2

Asconoid

Answer 2

~1 mm diameter, simplest sponge type

Question 3

syconoid

Answer 3

~cm diameter,

Question 4

Leuconoid

Answer 4

largest and most complicated sponge type

Question 5

archeocyte

Answer 5

totipotent: can give rise to all to fate cell types that make up the body

Question 6

choanocyte

Answer 6

line the interior sponges and beat their flagella regularly creating water flow across the microvilli

Question 7

3 layers tissue in porifera

Answer 7

choanoderm - contains choanocytes, inner most layer
mesohyl - connective tissue
pinacoderm - contains pinacocytes, external surface of the sponge, flattened cells,

Question 8

reproduction in porifera

Answer 8

asexual reproduction - archeocyte
sexual reporduction - through germ cells embedded in mesohyl (makes eggs-choanocytes or sperm-archeocytes), sperm is released though excurrent canals and enter another sponge though choanocytes, viviparity (live birth)