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BIOL1025 > Cnidarians And Ctenophores > Flashcards

Cnidarians And Ctenophores Flashcards

1
Q

Collarblasts

A

Adhesive cells

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2
Q

Haeckelia Rubra

A

Only ctenophore with cnidocytes acquired from feeding on cnidarian medusa

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3
Q

Octocorallia

A

Anthozoa, subclass, soft coral, sea pen, sea fan, octomerous symmetry, 8 tentacles, 8 septa

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4
Q

Solenia

A

Tubes running through mesoglea used for communication in octocorallia

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5
Q

Gorgonin

A

Similar to keratin and collagen

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6
Q

Zoantharia

A

Anthozoa, True, stony coral, mini anemones, calcareous cup, gastrovascular cavity hexamerous

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7
Q

Actinaria

A

Anthozoa, subclass, solitary sea anemones, attached to submerged strata. Glide via pedal disc

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8
Q

Strata

A

Shells, rocks, timber

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9
Q

Siphonoglyphs

A

Ciliated groove on sea anemones, drives water

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10
Q

Pedal disc

A

Used for attachment in actinaria

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11
Q

Oral disc

A

Surrounded by 1 or more circles of tentacles

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12
Q

Mesentries

A

Sheet like partitions

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13
Q

Protandrous

A

Produce sperm first and egg later

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14
Q

Mesentries function in anthozoa

A

Provide support for gastrovascular cavity when filled with water. Increase surface area for digestion and absorption

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15
Q

Ephyrae

A

Young jellyfish

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16
Q

Velarium

A

Structurally different from velum. Margin of bell, used for swimming

17
Q

Pedalium

A

Tough blades at base of cubozoa tentacles

18
Q

Rhopalia

A

Small sensory structures of scyphozoa and cubozoa. Houses between lappets

19
Q

Lappet

A

Indentation in scyphozoa and cubozoa umbrella

20
Q

Statocysts

A

Aid with orientation and gravity

21
Q

Ocelli

A

Light detectors, photoreceptors

22
Q

Strobilation

A

Transverse budding of scyphistoma

23
Q

Strobila

A

Juvenile (baby) jellyfish

24
Q

Scyphistoma

A

Poly stage of scyphozoa after planula settles

25
Q

Physalia

A

Hydrozoan, Portuguese man of war

26
Q

Siphonophores

A

Large pelagic colonies of individuals

27
Q

Pneumatophore

A

Gas filled float. Colony member 1

28
Q

Hydra

A

Hydrozoan, no Medusa phase, freshwater, dioecious. No planula larvae.

29
Q

Aglaura

A

Hydrozoan, no polyp stage. Medusa produces planula

30
Q

Actinula

A

Arises from planula larvae in hydrozoan aglaura. Develops into aglaura

31
Q

Gonangium

A

Reproductive polyp that forms Medusa in obelia

32
Q

Bell Margin

A

Carries tentacles and specialized sense organs

33
Q

Function of Radial Canals

A

Guide movement of water

34
Q

Cnidocytes

A

Specialized cells with nematocyst

35
Q

Nematocyst

A

Stinging organelles. Contain barbs or venomous coiled thread

BIOL1025 (7 decks)

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