Sponges, Cnidarians, Ctenophores, Flatworms

Question 1

What is sponges’ phylum?

Answer 1

porifera

Question 2

What is cnidarians’ phylum?

Answer 2

cnidaria

Question 3

What is ctenophores’ phylum?

Answer 3

ctenophora

Question 4

what is flatworms’ phylum?

Answer 4

platyhelminthes

Question 5

which group has no particular symmetry?

Answer 5

porifera (sponges)

Question 6

which group is bilaterally symmetrical and flat?

Answer 6

platyhelminthes (flatworms)

Question 7

which group has a central nervous system and brain?

Answer 7

platyhelminthes (flatworms)

Question 8

which group has 2/3 classes being parasites

Answer 8

platyhelminthes (flatworms)

Question 9

which two groups are radially symmetrical?

Answer 9

cnidaria (cnidarians) and ctenophora (ctenophores)

Question 10

which group are predators that capture prey using sticky tentacles?

Answer 10

ctenophora (ctenophores)

Question 11

which group can have devastating effects on an ecosystem by emptying the water column if there’s no natural enemies?

Answer 11

ctenophora (ctenophores)

Question 12

which group has an internal canal system and specialized cells (choanocytes) to filter plankton out of the water?

Answer 12

porifera (sponges)

Question 13

which group can reproduce both sexually and asexually?

Answer 13

porifera (sponges)

Question 14

which group plays an important positive role in ecosystems?

Answer 14

porifera (sponges)

Question 15

which group is gelatinous, mostly pelagic, and mouth down?

Answer 15

ctenophora (ctenophores)

Question 16

which group has polyp (benthic/mouth up) and medusa (pelagic/mouth down) forms?

Answer 16

cnidaria (cnidarians)

Question 17

which group lives in colonies with both forms (polyp and medusa)?

Answer 17

cnidaria (cnidarians)