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Organismic Biology Lab > Lab 3 - Intro to Animals > Flashcards

Lab 3 - Intro to Animals Flashcards

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1
Q

What are four directions of organisms?

A

Dorsal (back), ventral (belly), cranial (head or anterior), and caudal (tail or posterior

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2
Q

What part of the animal is dorsal?

A

the back

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3
Q

What part of the animal is ventral?

A

belly

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4
Q

What part of the animal is cranial?

A

head (anterior)

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5
Q

What part of the animal is caudal?

A

tail end (posterior)

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6
Q

What are some characteristics of animals?

A

Eukaryotic, multicellular, heterotrophic, complex

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7
Q

What are the levels of organization?

A

organelle, cellular, tissue, organ, organ system

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8
Q

What are the three germ layers?

A

Ectoderm, mesoderm, and endoderm

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9
Q

What is an ectoderm?

A

outside layer

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10
Q

What is a mesoderm?

A

middle layer

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11
Q

What is an endoderm?

A

inner layer

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12
Q

Diploblastic

A

two germ layers - possess ectoderm and endoderm but no mesoderm

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13
Q

Triploblastic

A

three germ layers - possess all three germ layers

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14
Q

What are the three types of symmetry?

A

asymmetry, radial, and bilateral

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15
Q

What is asymmetry?

A

no plane of symmetry

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16
Q

What is radial symmetry?

A

many planes of symmetry

17
Q

Are radial organisms diploblastic or triploblastic?

A

diploblastic

18
Q

What is bilateral symmetry?

A

one plane of symmetry

19
Q

Are bilateral organisms diploblastic or triploblastic?

A

triploblastic

20
Q

What are the three types of body cavities?

A

Acoelomate, pseudocoelomate, and coelomate

21
Q

Acoelomate

A

no body cavity

22
Q

Pseudocoelomate

A

“false” body cavity with no lining

23
Q

Coelomate

A

full lined body cavity

24
Q

What are the three types of skeletal systems?

A

Hydrostatic, exoskeleton, and endoskeleton

25
Q

What do hydrostatic skeletons rely on?

A

water pressure

26
Q

Exoskeletons

A

external, must be shed to grow

27
Q

endoskeletons

A

internal, grow within the organism

28
Q

What are some advantages of having a body cavity?

A

space for organ development, allows for larger size and variation of shape, body flexibility, isolate injuries

Organismic Biology Lab (16 decks)

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