SPONGIAIRES Flashcards

1
Q

quelle est la grande famille des spongiaires

A

métazoaires sans tissus

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2
Q

organisation des spongiaires (5)

A

-pas de symétrie
-2 types de cellules propres
-spicule
-système aquifère
-Pore

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3
Q

cellules côté endoderme

A

choanocytes

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4
Q

endoderme nom

A

choanoderme

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5
Q

exoderme cellules

A

pinacocytes / pinacoderme

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6
Q

quels sont des 2 grandes familles de spongiaires

A

siliciés + X

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7
Q

siliciés

A

hexactinellides, démosponges

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8
Q

X

A

calcisponge, homoscléromorphes

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9
Q

forme hexactinellides

A
  • étoile sillicieux
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10
Q

(3) organisation hexactinellides

A

sycon et sans pinacoderme avec choanoderme

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11
Q

démosponge squelette

A

spongine seul ou spongine + spicule siliceux

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12
Q

démosponge organisation

A

leucon

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13
Q

(5) calcisponges caractéristiques

A

-spicule en calcaire monocristallin
-triactidnes, diactines, tétractines
-marines
-petites
-faible profondeur

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14
Q

calcisponges organistaion

A

ascon, sycon, leucon

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15
Q

environnement hexactinellides

A

marin profond

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16
Q

environnement démosponges

A

partout, surtout en milieu marin tropical ou polaire

17
Q

caractéristiques homoscléromorphes (2)

A

sans spicule ou avec des microsclèves silicieux
avec lame basale