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Zoo 250 > Porifera > Flashcards

Porifera Flashcards

1
Q

Porifera

A

Calcarea, Demospongiae(Euspongia and spongilla), Hexactinellida(Euplectella= glass sponge)
No true tissue
No mouth or tissue
Sessile

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2
Q

Calcarea

A

Calcareous spicules with 3 rays - No Spongin
Species = Grantia- Marine Syconoid, Asconoid, Leuconoid
Ostia, osculum, spicules, spongocoel, flagellated chambers, pinacoderm, choanocytes

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3
Q

Asconoid

A

Body plan
(Bigger cavity with only choanocytes)
Calcarea
Single Flagellate pumping cell

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4
Q

Syconoid

A

Body Plan
(Looks like there are tunnels)
Calcarea
Many flagellated canals

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5
Q

Leuconoid

A

Body plan
(Smaller cavity with circles inside)
Calcarea and all other classes
Many flagellated chambers connected by passive canals

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6
Q

Ostia

A

Small incurrent pores

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7
Q

Osculum

A

One large excurrent pore

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8
Q

Spicules

A

Skeletal - support and defense

calcium carbonate or hydrated silicon dioxide

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9
Q

Spongocoel

A

Fluid filled cavity via ostia

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10
Q

Flagellated chambers

A

Pumps water

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11
Q

Pinacoderm

A

Outer Layer

Pinacocyte- flat cells that form the outer body

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12
Q

Choanocytes

A

Single flagella and ring of microvilli

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13
Q

Demospongiae

A 
Silica spicules many shapes 
Never 6 rays 
Leuconoid 
Euspongia 
Spongin fibers, gemmules
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14
Q

Spongin Fibers

A

Skeletal Flexibility

Demospongiae)(typical bath sponge

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15
Q

Gemmules

A

Freshwater sponge

dormant embryonic cells

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16
Q

Hexactinellida

A

Silica Spicules with 6 rays and no spongin

Collar bodies and flagella

17
Q

Difference between Hexactinellida and other sponges

A

Single cell membrane with a bunch of nuclei with one cytoplasm

18
Q

Mesohyl

A

Gelatinous matrix (skeletal support)

19
Q

Total Magnification

A

Eyepiece x objective

20
Q

Spongin

A

Tough elastic fibers of collagen

Zoo 250 (3 decks)

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