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Invertebrate Biology > Phylum Porifera > Flashcards

Phylum Porifera Flashcards

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1
Q

Pinacoderm

A

Cells on outside of sponge body wall

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2
Q

Porocytes

A

Cells that line the pore of the sponge body wall

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3
Q

Amoeboids

A

Flower shaped cells that can turn into gonads

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4
Q

Spicules

A

Cells for protection

Made of calcium carbonate, silicon dioxide, or spongin

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5
Q

Choanocytes

A

Cells with nucleus and collar and flagella to filter water throughout sponge and to filter feed

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6
Q

Sclerocytes

A

Produce calcium carbonate spicules

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7
Q

Spongocytes

A

Produce spongin cells

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8
Q

Body plans complexity

A

Asconoid
Syconoid
Leuconoid

More complex by adding more surface area and canals

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9
Q

Water flow

A

Choanocytes beat to draw water into sponge; fluid dynamics move water through sponge; change diameters of canals to change velocity; slow water to pull out food easier and get rid of waste by speeding up

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10
Q

Ostea

A

Where water enters

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11
Q

Osculum

A

Where water leaves

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12
Q

Class Calcera

A

Calcium carbonate spicules

All marine

Have only living asconoid

All Viviparous

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13
Q

Class Hexactinellida

A 
Silica spicules- 6 spikes
Syconoid or leuconoid only 
Syncytium = multinucleated 
Shared common plasma membrane
Non-mobile
Fiber optic cables
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14
Q

Class Demospongia

A

80% all species and have all FW species

Nearly all leuconoid

Spongin or glass spicules

Both viviparous and oviparous

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15
Q

Cladorhizid sponges

A

Cl Demospongia

Predators the capture of things that bump into them

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16
Q

Class Homoscleromorph

A

Spicules absent except silica when present

Only ones with a basal lamina

Marine

Viviparous

17
Q

Sclerospongia

A

Stones sponges

Build a really hard calcium carbonate structures with a thin layer of tissue on top

Cl Homoscleromorph

18
Q

Freshwater sponge problems

A

Getting rid of kids to find a new home

Temporary drought

19
Q

Fresh water sponge solution

A

Form hard GEMMULE that will hatch when conditions are good

20
Q

Drugs

A

AraC = leukemia

AraA = HepC

AZT = aids and HIV

Invertebrate Biology (7 decks)

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