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Bio 152 > Test 3 > Flashcards

Test 3 Flashcards

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Biology 101 flashcards
1
Q

Mitotic cell divisions without cell growth in between

A

Cleavage Division

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2
Q

“Solid ball” stage of embryo

A

Morula

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3
Q

Formation of the hallow ball after many divisions in development

A

Blastula

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4
Q

Clump of cells formed within the first few days of development

A

Blastocyst

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5
Q

Blastocoel

A

Space between endoderm and ectoderm in development

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6
Q

During the gastrulla stage, this helps digest things

A

Archenteron

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7
Q

Opening to digestive track; it will become the mouth or anus

A

Blastopore

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8
Q

No body cavity

A

(A)coelomate

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9
Q

Body cavity lined with mesoderm

A

Coelomate

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10
Q

Body cavity that’s linked with mesoderm

A

Coelomate

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11
Q

Anus develops first from blasopore

A

Deuterostome

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12
Q

Mouth develops first from blastopore

A

Protostome

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13
Q

Only has ectoderm and endoderm while developing

A

Diploblastic

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14
Q

Has mesoderm, ectoderm, and endoderm

A

Triploblastic

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15
Q

Most recent common ancestor of animals

A

710 MYA

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16
Q

Their cleavage is spiral, their cells are determinate, and their coelom is formed via splitting

A

Protostomes

17
Q

Their cleavage is radial, cells are indeterminate, their mouth is formed second after their anus

A

Deuterostomes

18
Q

Phylum sponges are in

A

Porifera (filter feeders)

19
Q

What is special about phylum Cnidarian (jelly’s, hydra, corals)

A

Tissues formed, it only has one opening, has nematocysts and cnidocyte

20
Q

Phylum’s flatworms are in

A

Platyhelmithes

21
Q

Feature of flatworms

A

Bilateral, pseudo acoelomate, 3 germ layers, only 1 gut opening

22
Q

Rotifera classification

A

Bilateral, pseudocoelem

23
Q

Three stages of development vs four stages of development

A

Incomplete vs Complete development

Bio 152 (1 decks)

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