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Bio 102 - Unit 3 > Definitions > Flashcards

Definitions Flashcards

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Biology 101 flashcards
0
Q

Coelomate

A

Having a body cavity fully lined with mesoderm

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1
Q

Coelom

A

True body cavity, tube within a tube

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2
Q

Pseudocoelomate

A

Having a body cavity not completely lines with mesoderm

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3
Q

Protostomate

A

“First mouth”, mouth developed first

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4
Q

Heterotroph

A

Gets its food from another source

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5
Q

Germ tissue

A

Embryonic tissue that gives rise to other tissues (ectoderm, mesoderm, endoderm)

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6
Q

Eukaryotic

A

Having cells with organelles and a membrane-bound nucleus

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7
Q

Filter feeder

A

Obtains food particles by filtering water or soil

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8
Q

Hermaphrodite

A

Has both male and female parts

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9
Q

Gastrovascular cavity

A

Not a true digestive system found in Cnidaria and Platyhelminthes

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10
Q

Radula

A

Scraping device used in snails for digestion

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11
Q

Amoebocyte

A

Cell functioning in digestive, reproductive, and spicule formation in sponges

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12
Q

Choanocyte

A

“Collar cells”

Functioning in feeding and reproduction in sponges

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13
Q

Spincule

A

Skeletal element of a sponge

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14
Q

Cnidocyte

A

Stinging cells on the tentacles of Cnidaria

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15
Q

Medusa

A

Free-swimming stage of Cnidaria, reproduces sexually

16
Q

Polyp

A

Stalk-like stage of Cnidaria, reproduces asexually

17
Q

Metanephridia

A

Found in Annelida for excretion, open into the coelom

18
Q

Protonephridia

A

Found in Platyhelminthes and Nematoda for excretion, closed by a terminal cell

19
Q

Mantle (Mollusca)

A

Surrounding membrane of visceral mass

20
Q

Spiracle and trachea

A

Used for respiration in Anthropa, spiracle = pores

21
Q

Chitinous excoskeleton

A

Found in arthropods, hard outer layer made of chitin

22
Q

Cephalization

A

Tendency to develop a head (anterior)

23
Q

Tube feet

A

Used for movement in echinoderm as well as suction in predation

24
Q

Radial symmetry

A

Cylindrical in shape

25
Q

Bilateral symmetry

A

May be divided into left and right sides

26
Q

Closed circulatory system

A

Blood in a separate, continuous network

27
Q

Dorsal nerve cord

A

Found on the “back” side an organism

28
Q

Notochord

A

Cartilaginous rod that is required by all chordates

29
Q

Vertebrate

A

Had a skeleton/backbone

Bio 102 - Unit 3 (5 decks)

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