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Biology > Unit 11 Test > Flashcards

Unit 11 Test Flashcards

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1
Q

Mitosis

A

Nuclear cell division

2 daughter cells

Complete set of chromosomes

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2
Q

Zygote

A

Diploid Cell formed when sperm fertilizes egg

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3
Q

Blastula

A

Hollow ball of cells in layer surrounding a fluid filled space

Embryo after cleavage but before gastrula

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4
Q

Gastrula

A

Embryo development stage where cells on one side of blastula move inward forming cavity of two or 3 layers with opening at one end

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5
Q

Ectoderm

A

Outer cells on gastrula

Skin and nervous tissue

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6
Q

Mesoderm

A

Middle Cell layer in gastrula

Between ectoderm and endoderm

Forms muscles, circulatory system, excretory system

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7
Q

Endoderm

A

Inner cell layer of gastrula

Develops into digestive system

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8
Q

Protosome

A

Animals with mouths that develop from opening in gastrula

Mouth—>Anus

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9
Q

Dueterostome

A

Animal where mouth comes from cells besides the gastrula

Anus—> mouth

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10
Q

Larva

A

In insects, free living worm like stage of metamorphosis

Caterpillar

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11
Q

Asymmetry

A

Not symmetrical

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12
Q

Bilateral symmetry

A

Body arranged left and right

Butterfly

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13
Q

Radial symmetry

A

Body arranged with central part

Pie

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14
Q

Anterior

A

Direction

Towards head

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15
Q

Posterior

A

Away from head

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16
Q

Dorsal

A

Towards the back

17
Q

Ventral

A

Away from back

18
Q

Acoelom

A

No body cavities

19
Q

Pseudocoelom

A

Fluid filled body

20
Q

Coelom

A

Fluid filled body cavity completely surrounded by mesoderm

21
Q

Exoskeleton

A

Hard covering on outside of body

Support

Mollusks, spiders

22
Q

Endoskeleton

A

Internal skeleton, support, internal organs, internal brace

23
Q

Invertebrate

A

Animal without a backbone

24
Q

Vertebrate

A

Animal with endoskeleton and backbone

25
Q

Filter feeders

A

Food particles filtered through the water

Sponges

26
Q

Osculum

A

In sponges

Large opening on top

Water and waste expelled through this/exits

Biology (9 decks)

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