T21 - Porifera and Cnidaria

Question 1

which are the basal animals in clade metazoa?

WHO LIVES IN A PINEAPPLE UNDA DA SEAA

Answer 1

sponges

Question 2

spircules

Answer 2

needles/rods of silica or calcium carbonate for the structure of sponges

Question 3

spongin

Answer 3

a fibrous collagen network

Question 4

what is the purpose of choanocytes?

Answer 4

transportation of oxygen and nutrients, removal of waste and CO2

Question 5

amoebocytes

Answer 5

transport nutrients within the sponge body

Question 6

porocytes

Answer 6

pores of the sponge

Question 7

epidermal cells

Answer 7

outer layer of sponge

Question 8

what are the four important parts of a sponge?

Answer 8

• choanocytes
• amoebocyte
• porocyte
• epidermal cells

Question 9

suspension feeders

Answer 9

capture food particles suspended in water

Question 10

hermaphrodites

Answer 10

have both male and female features

Question 11

what are the two phyla under eumetazoa?

Answer 11

ctenophora and cnidaria

Question 12

gastrodermis

Answer 12

a body part of the chidarian that lines the gastrovascular cavity

Question 13

mesoglea

Answer 13

the jelly of the jellyfish

Question 14

gastrovascular cavity

Answer 14

the central digestic compartment (sac) of cnidarians

Question 15

polyp

Answer 15

the “anemone-like” form of cnidarians

Question 16

medusa

Answer 16

the “jellyfish-like” form of cnidarians

Question 17

what is the difference between medusozoans and anthozoans?

Answer 17

anthozoans HAVE NO medusa stage