Bio 112A Cnidaria

Front 1

Back 1

Class: Scyphozoa

Genus: Aurelia

Front 2

Back 2

Hydra basal disk

-attachment to substrate

Front 3

Back 3

Hydra basal disk

-attachment to substrate

Front 4

Back 4

Hydra Bud

-asexual reproduction

Front 5

Back 5

Hydra Bud

-asexual reproduction

Front 6

Back 6

Hydra cnidocytes

-discharge poison for defense and capturing prey

Front 7

Back 7

Hydra Egg

-female gamete

Front 8

Back 8

Hydra epidermis

-protection

Front 9

Back 9

Hydra gastrodermis

-digestion

Front 10

Back 10

Hydra gastrovascular cavity

-digestion

Front 11

Back 11

Hydra gastrovascular cavity

-digestion

Front 12

Back 12

Hydra mouth

-ingestion of food

Front 13

Back 13

Hydra ovary

-female gonad

Front 14

Back 14

Hydra sperm

-male gamete

Front 15

Back 15

Hydra tentacles

-defense and capture prey

Front 16

Back 16

Hydra tentacles

-defense and capture prey

Front 17

Back 17

Hydra testes

-male gonad

Front 18

Back 18

Hydrozoan

Front 19

Back 19

Discharged nematocysts

Front 20

Back 20

Metridium gastrovascular cavity

-digestion

Front 21

Back 21

Metridium gonad

-sexual reproduction

Front 22

Back 22

Metridium mouth

-ingestion of food

Front 23

Back 23

Metridium oral disk

-raised portion of mouth

Front 24

Back 24

Metridium pedal disk

-attachment to substrate

Front 25

Back 25

Metridium pharynx

-pull prey in and expell waste

Front 26

Back 26

Metridium retractor muscles

-movement

Front 27

Back 27

Metridium tentacles

-defense and capture prey

Front 28

Back 28

Class: Anthozoa

Genus: Metridium

Front 29

Back 29

Obelia hydranth

-feeding polyp

Front 30

Back 30

Obelia medusa buds

-asexual reproduction

Front 31

Back 31

Obelia medusa

-sexual reproduction

Front 32

Back 32

Obelia gonangium

-reproductive polyp

Front 33

Back 33

Obelia tentacles

-capture prey and defense

Front 34

Back 34

Class: Hydrozoa

Genus: Obelia

Front 35

Hydrozoan examples and body forms

Back 35

Hydra, Obelia

Both polyp and medusa

Front 36

Scyphozoa example and body forms

Back 36

Aurelia (true jellies)

Medusa dominate

Front 37

Anthozoa examples and body forms

Back 37

Metridium, anemones, corals

Polyp only

Front 38

Nematocysts

Back 38

poison filled barbs discharged from cnidocytes

Front 39

Hydra class

Back 39

Hydrozoa

Front 40

Obelia class

Back 40

Hydrozoa

Front 41

Aurelia (moon jelly) class

Back 41

scyphozoa

Front 42

Metridium class

Back 42

Anthozoa

Front 43

Hydra, Portuguese man'o'war, fake jellies

Back 43

Hydrozoa

Front 44

Anemones, corals, sea whips, sea fans

Back 44

Anthozoa

Front 45

true jellies, aurelia

Back 45

Scyphozoa