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Bio 102: Kingdom Animalia- Invertebrates > Terminology > Flashcards

Terminology Flashcards

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Biology 101 flashcards
1
Q

Cnidoblast

A

Specialized cells that contain a secretory organelle.

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2
Q

Nematocyst

A

Long coiled thread that shoots out and injects toxins into the prey.

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3
Q

Sessile

A

Attached to a substrate

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4
Q

Polyp

A

Body shape that is attached to a substrate

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5
Q

Medusa

A

Body shape that is upside down and free floating.

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6
Q

Radial Symmetry

A

Arranged around single main axis divided into 4 halves

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7
Q

Bilateral Symmetry

A

Arranged along central axis cut into 2 halves

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8
Q

Incomplete Gut

A

Contains 1 hole for mouth and anus

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9
Q

Complete Gut

A

Contains 2 holes 1 for mouth, 1 for anus

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10
Q

Pseudocoelom

A

False Body found between outer body wall & the digestive tube.

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11
Q

Coelom

A

A fluid filled body cavity found between layers of mesoderm.

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12
Q

Exoskeleton

A

A hard protective body

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13
Q

Chitin

A

A fibrous substance consisting of polysacarides

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14
Q

Mandibles

A

Jaw bones to chew food

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15
Q

Mantle

A

A soft unsegmented body & often containing a shell

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16
Q

Open Circulatory System

A

No True Heart. Fluids flow freely throughout the body

17
Q

Notochord

A

Flexible supporting rod that runs the length of the body. Dorsal digestive tract replaced by vertebral column in vertebrates.

18
Q

Dorsal Hollow Nerve Tube

A

Develops into the central nervous system: the brain and spine by which cerebrospinal fluid passes.

19
Q

Pharyngeal Gill Slits/Pouches

A

Animals have gill slits and humans have pouches.

20
Q

Ectothermic

A

Animals whose regulation of body temperature depends on external sources, such as sunlight or a heated rock surface

21
Q

Endothermic

A

Animals that maintain a constant body temperature independent of the environment.

22
Q

Tissue

A

Consists of a group of structurally and functionally similar cells and their intercellular material

23
Q

Organ

A

A group of tissues in a living organism that have been adapted to perform a specific function. In higher animals, organs are grouped into organ systems

24
Q

Organ System

A

A group of anatomical structures that work together to perform a specific function or task

Bio 102: Kingdom Animalia- Invertebrates (7 decks)

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