Cnidarians

Front 1

A broad taxonomic rank that has been used to classify radially symmetric animals

Back 1

Radiata

Front 2

Develop from only two embryonic cell layers

Back 2

Diploblastic

Front 3

The two layers that develops radiate animals

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Endoderm and Ectoderm

Front 4

Radiate animals are soft-bodied invertebrates that lack ____________

Back 4

Cephalization

Front 5

Having a head area

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Cephalization

Front 6

Phylum Cnidaria is made up of over ________ species including jellyfish, sea anemones, and coral

Back 6

9,000

Front 7

What type of body are adults composed of?

Back 7

Two-layered body

Front 8

Outer cell layer of an adult cnidarian

Back 8

Epidermis

Front 9

Cells which aid in movement; can contract, extend, bend, or pulse the body or tentacles of the organism

Back 9

Epitheliomuscular cells

Front 10

Inner cell layer of an adult cnidarian; functions mainly in digestion

Back 10

Gastrodermis

Front 11

An extracellular matrix that acts like glue between the two body layers

Back 11

Mesoglea

Front 12

The mesoglea "jelly" is made up of _____% water

Back 12

95

Front 13

A blind gut with a single exterior opening that serves as both the mouth and anus

Back 13

Gastrovascular cavity

Front 14

Type of cnidarian nervous system

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Nerve net

Front 15

Nerve cells connecting the epitheliomuscular cells with sensory cells forms a __________

Back 15

Neuromuscular system

Front 16

Term referring to organisms with two different body forms

Back 16

Dimorphism

Front 17

All cnidarian forms fit into one of two morphological types, which is

Back 17

A polyp or medusa

Front 18

The vase-shaped hydroid form adapted to a sessile life

Back 18

Polyp

Front 19

Body form of free-swimming jellyfish

Back 19

Medusa

Front 20

Sensory structures for balance and orientation

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Statocysts

Front 21

Sensory structure used for light reception

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Ocelli

Front 22

What is a group of jellyfish called?

Back 22

A smack

Front 23

Process in which a polyp can produce many medusae

Back 23

Strobilation

Front 24

Immature medusa

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Ephyrae

Front 25

The result of strobilation

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An 8-armed free swimming ephyrae

Front 26

Cnidarian stinging cells

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Cnidocytes

Front 27

Cnidocytes contain organelles called

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Cnidae

Front 28

4 major groups of cnidarians

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Scyphozoa, cubozoa, hydrozoa, anthozoa

Front 29

Includes most of the larger true jellyfish or "cup animals"

Back 29

Scyphozoa

Front 30

Discharge enzymes on the food to begin extracellular digestion

Back 30

Gland cells

Front 31

Corals use these small organisms to supplement their nutrition

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Zooxanthellae

Front 32

Simple eyes or eyespots

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Ocelli

Front 33

Colonies of specialized individuals called zooids

Back 33

Siphonophores

Front 34

The most venomous animal in the world

Back 34

Box jellies

Front 35

Most abundant freshwater type of cnidarian

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Hydra

Front 36

Largest class of cnidarians includes sea anemones and corals

Back 36

Anthozoa

Front 37

Three subclasses of Anthozoa

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Hexacorallia, Ceriantipatharia, Octocorallia

Front 38

These "flower of the sea" form symbiotic relationships with clownfish and hermit crabs

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Sea anemones

Front 39

Protected by a mucus layer that makes them immune to sea anemones stings

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Clownfish

Front 40

Box jellies named for their cube-shaped medusae

Back 40

Cubozoa

Front 41

Oval-shaped animals with paddle-like hairs that shimmer with rainbow colors

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Portuguese Man-of-War

Front 42

Motile larva of a jellyfish

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Planula

Front 43

The most common type of cnidae

Back 43

Nematocysts

Front 44

Another name for the gastrovascular cavity

Back 44

Coelenteron

Front 45

Type of Asexual reproduction in which knobs of tissue form on the side of an existing polyp

Back 45

Budding

Front 46

Nickname for Chironex fleckeri

Back 46

Sea wasp

Front 47

Term referring to a native organism restricted to a certain country or area

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Endemic

Front 48

The largest known species of jellyfish

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Lion's mane

Front 49

The nematocyst sensor which triggers the filament to pop out

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Cnidocil

Front 50

Adjective to describe animals that prefer open water

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Pelagic

Front 51

Adjective to describe animals that prefer substrate (bottom) environments

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Benthic

Front 52

The four horse-shoe shaped structures of a moon jelly

Back 52

Gonads

Front 53

Term for animals that are not colonial but instead live as individual polyps

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Zooid

Front 54

Type of Asexual reproduction in which an individual divides in half as one side of the polyp pulls away from the other side

Back 54

Fission

Front 55

Common predators of jellyfish

Back 55

Sea turtles

Front 56

Sea anemones have this type of symmetry

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Radial

Front 57

Phylum of comb jellies and Sea Walnuts

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Ctenophora

Front 58

In what class of cnidarians would Moon Jellyfish and "cup animals" be located

Back 58

Scyphozoa

Front 59

The scientific name for a moon jellyfish

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Aurelia aurita

Front 60

Scientific name for Nomura's Jellyfish

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Nemopilema nomurai

Front 61

The mouth side of a cnidarian

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Oral surface

Front 62

The side opposite of the mouth

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Aboral surface

Front 63

Portuguese Man-of-War, Hydra, Siphonophores , and "sea serpent animals"

Back 63

Hydrozoa

Front 64

Contains stony or bard corals

Back 64

Hexacorallia

Front 65

Has simple, unbranched tentacles

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Ceriantipatharia

Front 66

Has 8 feather-like tentacles per polyp

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Octocorallia