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finals syste > Cnidarians > Flashcards

Cnidarians Flashcards

1
Q

Examples of Cnidarian animals

A

hydras, jellyfishes, sea anemones, corals, and their relatives

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2
Q

Ctenophora example

A

comb jellies

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3
Q

They comprise the branch radiata

A

Cnidaria and Ctenophra

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4
Q

animals with radial symmetry

A

radiata

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5
Q

animals with bilateral symmetry

A

bilateria

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6
Q

Two mahor branches of eumatazoans

A

Radiata and bilateria

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7
Q

what are animals with tissues

A

eumatozoans

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8
Q

radiate animals have ____ and ____ sides

A

oral and aboral sides

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9
Q

Radiate animals have no _____ and_____ and no _____ and _____

A

head end and rear; left and right

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10
Q

with ectoderm and endoderm layers only

A

diploblastic

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11
Q

has 3 germ layes including the mesoderm

A

triploblastic

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12
Q

radiata are _____ while bilateria are _____

A

diploblastic; triploblastic

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13
Q

acts as the mouth and anus

A

gastrovascular cavity

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14
Q

cnidarians are usually found in

A

shallow marine habitats in warm and tropical regions

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15
Q

four classes of cnidarians

A

Hydrozoa, Scyphozoa, Cubozoa, Anthozoa

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16
Q

the body wall of cnidarians have three basic layers:

A

ectodermis, gastrodermis or endodermis, and the lining of the gastrovascular cavity which is the coelenteron

17
Q

other name for mouth in cnidarians

A

stomodaeum

18
Q

cnidarians’ epidermis contains speciallized cells called

A

cnidocytes

19
Q

cnidocytes (specialized cell) contain

A

nematocysts

20
Q

two structural types of cnidarians

A

polyp(sessile) and medusa(free-swimming)

21
Q

parts of the polyp

A

basal disc, body column, oral disc

22
Q

medusa parts: basal discs becomes ____ and oral discs becomes ______

A

exumbrella and subumbrella

23
Q

what is complete absent in athozoans

A

medusoid stage

24
Q

two growth forms of polyps

A

solitary and colonial

finals syste (10 decks)

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