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Bio 100 > Quiz 3 - Ch. 18 > Flashcards

Quiz 3 - Ch. 18 Flashcards

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Biology 101 flashcards
1
Q

Animals

A

Eukaryotes

Do not have cell walls
Movement

Heterotrophs – mostly internal digestion

Multicellular – all except sponges have true tissues

Gametes (haploid cells) are unicellular

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2
Q

Radial Symmetry

A

regularly arranged and radiate from a central point (circle)

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3
Q

Bilateral Symmetry

A

2 symmetrical halves

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4
Q

Coelom

A

“body cavity”

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5
Q

Acoelomate

A

“no body cavity”

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6
Q

Pseudocoelomate

A

false body cavity; not completely lined w/ muscle

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7
Q

Coelomate

A

true body cavity; lined w/ muscle

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8
Q

3 Tissue Layers

A

Ectoderm, Mesoderm, Endoderm

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9
Q

Ectoderm

A

outside; blue; Ex: skin

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10
Q

Mesoderm

A

middle; red; Ex: muscle/blood

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11
Q

Endoderm

A

inside; yellow; Ex: digestive tract

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12
Q

Protosomes

A

mouth forms first

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13
Q

Deuterostomes

A

mouth forms second

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14
Q

Cnidaria

A

Radial Symmetry

2 tissue layers

stinging cells

ex: Jelly fish/Sea Anemone

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15
Q

Platyhelminthes

A

Bilateral Symmetry

often parasites

3 tissue layers

acoelomate

ex: Planaria, tapeworms, flukes

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16
Q

Nematoda

A

Pseudocoelomate

bilateral symmetry

3 tissue layers

often parasites

ex: round worms

17
Q

Mollesca

A

Soft bodied, some have hard shells

bilateral symmetry

complete digestive tract and circulatory system

3 tissue layers

ex: snails, squid, oysters, etc.

18
Q

Annelida

A

Segmentation (allows for greater movement and flexibility)

coelomate

3 tissue layers

ex: earthworms, leaches, etc.

19
Q

Arthropoda

A

head, thorax, and abdomen

bilateral symmetry

3 tissue layers

ex: insects, crustaceans, aracnids, etc.

20
Q

Echinoderms

A

Deuterostomes

bilateral symmetry

3 tissue layers

ex: starfish, sea urchins, sand dollars, etc.

21
Q

Chordata

A

dorsal hollow nerve chord

notochord (directs development of dorsal hollow nerve cord)

post-anal tail

pharyngeal gill slits

(ex: us!!… and a lot of other stuff)

Bio 100 (11 decks)

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