Cnidarian

Question 1

Meaning of cnidarian

Answer 1

Stinging nettle

Question 2

Defined by…?

Answer 2

having cnidocytes

Question 3

Type of Symmetry?

Answer 3

Radial

Question 4

Ancestor

Answer 4

Protist

Question 5

Cell type?

Answer 5

Dipoblastic (2 cell layers)

Question 6

Classes of Cnidarians

Answer 6

Hydrozoa, Scyphozoa, Cubozoa, Anthozoa

Question 7

Hydrozoa

Answer 7

Obelia, Hydra, Portuguese Man-O-War; Polyp & medusa

Question 8

Scyphozoa

Answer 8

True Jellyfish; medusa; many tentacles

Question 9

Cubozoa

Answer 9

Box Jellyfish; medusa stage; deadly toxins

Question 10

Anthozoa

Answer 10

Sea anemones, coral polyps; only polyps

Question 11

Sedentary

Answer 11

Can move but choose not to

Question 12

Internal Transport

Answer 12

All done via diffusion

Question 13

Reproduction

Answer 13

Dioecious; polyps=asexual budding; medusa=sexual

Question 14

Polyp

Answer 14

tentacles up, sedentary, anemones, has basal disk

Question 15

Medusa

Answer 15

tentacles go down, free swimming, jellyfish

Question 16

Mesoglea

Answer 16

Layer between epidermis & gastrodermis

Question 17

Epidermis

Answer 17

Outside cell layer

Question 18

Gastrodermis

Answer 18

Layer surrounding the gastrovascular cavity

Question 19

Cnidocyte

Answer 19

stinging cell, on outside of cnidarian

Question 20

Gastrovascular cavity

Answer 20

“stomach”, extracellular digestion

Question 21

Mesoglea is…

Answer 21

not a tissue layer

Question 22

Basal disk

Answer 22

Bottom of cnidarian, allows them to be sedentary