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Animal Biology Exam 3 > exam 3 > Flashcards

exam 3 Flashcards

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1
Q

Protosomes: Cleavage

A

Spiral

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2
Q

Deuterostomes: Cleavage

A

Radial

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3
Q

Protosomes: Fate of cells

A

Determinant

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4
Q

Deuterostomes: Fate of cells

A

Indeterminant

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5
Q

Protosomes: Origin of mesoderm

A

From clumps near blastopore

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6
Q

Deuterostomes: Origin of mesoderm

A

Outpockets of Archenteron

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7
Q

Protosomes: Coelom Formation

A

Schizocoelous

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8
Q

Deuterostomes: Coelom Formation

A

Enterocoelous

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9
Q

Protosomes: Fate of the blastopore

A

Mouth

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10
Q

Deuterostomes: Fate of the blastopore

A

Anus

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11
Q

Eucoelomate

A
  • Has a true coelom (fluid filled body cavity) Example: Phylum Annelida
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12
Q

Hemocoelomate

A

Cavity that blood circulates through

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13
Q

Phylum Cycliophora: Habitat

A

Live on the mouth parts of marine decapods (lobsters) attach themselves to bristles with their adhesive discs on the end of an acellular stalk

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14
Q

Phylum Cycliophora: Lifestyle

A

Cycliophora feed by collecting bacteria or bits of food from dropped from their lobster host on a ring of compound cilia that surrounds the mouth

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15
Q

Phylum Entoprocta: How to distinguish from a hydroid? (Phylum Cnidaria?)

A

-Have ciliated tentacles that tend to roll inward, very distinct body cavities

Cnidarians do not have a true stomachs or intestines

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16
Q

Lophophorates: What is a lophophore?

A

a crown of tentacles that surrounds the mouth

17
Q

Lophophorates: What phyla possesses a lophophore?

A

Bryozoa, Brachiopoda, Phoronida

18
Q

Phylum Bryozoa/Ectoprocta: How to distinguish from hydroid (Phylum Cnidaria)

A
  • Bryozoans have lophophores

- Cnidarians have calcium carbonate skeletons

19
Q

Phylum Brachiopoda: Major differences between brachiopods and mollusks

A

Plane of symmetry in a bivalve runs along the hinge line

plane of symmetry in a brachiopod is perpendicular to the hinge line

20
Q

How to distinguish class articulata and class inarticulata

A

Articulata have pedicels

inarticulata open and close with muscles

Animal Biology Exam 3 (1 decks)

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