phylum cnidaria (hydra, coral, sea anemones)

Question 1

what four animals are in phylum chidaria

Answer 1

hydra. jellyfish. coral. sea anemones.

Question 2

describe major characteristics of chidaria

Answer 2

adult bodies hace chidocytes and radial symmetry
aquatic, mostly marine
heterotrophic
only endoderm and ectoderm

Question 3

what are chidocytes

Answer 3

stinging cells

Question 4

describe the body plan of chidaria

Answer 4

two body forms -
a mobile medusa
sessile (non mobile)
tenticles arranged around an opening to sac-like body

Question 5

what do tentacles contain

Answer 5

many unique stinging cells that eject a barbed thread and possibly a toxin

Question 6

what do tentacles do

Answer 6

capture prey and push them into the gastrovascular cavity where digestion occurs

Question 7

describe the nervous system

Answer 7

simple muscle fibers and nerve fibers, so animals are capable of directional movement 
no ganglion (grouping if nerves)

Question 8

describe the sexual reproduction

Answer 8

each medusa develops and forms gametes
a bilaterally symmetrical larva-planula developed from zygotes
the planula settles in an appropriate location and grows into the adult location and grows into the adult polyp,

Question 9

describe the asexual reproduction

Answer 9

once the polyp has grown into an adult, it being budding and forms medusae

Question 10

describe class antheza (sea anemones and corals)

Answer 10

uhh

Question 11

where on the body of a cnidarian are stinging cells located

Answer 11

tentacles

Question 12

describe the adult bodies

Answer 12

stinging cells, radial symmetry, aquatic, endoderm and ectoderm