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animal bio lab test 1 > cnidarian body parts > Flashcards

cnidarian body parts Flashcards

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Biology 101 flashcards
1
Q

Hydrozoa tentacles

A

defense and prey capture

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2
Q

Hydrozoa mouth

A

ingestion of food, elimination of indigestible particles (egestion)

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3
Q

Hydrozoa cnidocytes

A

cells located in epidermal layer of tentacles and body wall, discharge barbs for capturing prey or deterring predators

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4
Q

hydrozoa gastrovascular caviity

A

chamber where extracellular digestion occurs, only opening is mouth

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5
Q

hydrozoa bud

A

product of asexual reproduction

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6
Q

hydrozoa gonads

A

organs for sexual reproduction; individuals are dioecious, have either testes or ovaries

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7
Q

hydrozoa basal disk

A

attach to substrate

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8
Q

hydrozoa epidermis

A

outer tissue layer, protection

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9
Q

hydrozoa gastrodermis

A

inner tissue layer, digestion

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10
Q

hydrozoa mesoglea

A

inert gelatinous substance for supporting the body

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11
Q

hydrozoa feeding polyp (hydranth)

A

polyp for food acquisition

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12
Q

hydrozoa hypostome

A

mound of tissue to regulate size of mouth opening

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13
Q

hydrozoa gonangium

A

polyp for reproduction

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14
Q

hydrozoa medusa buds

A

product of asexual reproduction; released from gonangium

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15
Q

hydrozoa perisarc

A

translucent outer covering

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16
Q

scyphozoa marginal tentacles

A

provide sensory information, defense and locomotion

17
Q

scyphozoa oral arms

A

defense and prey capture

18
Q

scyphozoa gonads

A

organs for sexual reproduction (testes and ovaries), gametes released into gastric pouches and exit body through mouth

19
Q

scyphozoa gastric pouch

A

one of four divisions of gastrovascular cavity for digestion

20
Q

scyphozoa radial canals

A

extensions of gastric pouches and distribute nutrients throughout body

21
Q

scyphozoa circular canals

A

circular extension of gastric pouches that distributes nutrients to outer rim

22
Q

scyphozoa rhopalium

A

sensory organ that responds to gravity and sometimes light to maintain equilibrium

23
Q

anthozoa oral disk

A

raised portion of mouth

24
Q

anthozoa gonads

A

gametes released into gastric pouches and exit through mouth

25
Q

anthozoa ostium

A

pore that allows circulation of fluids between adjacent body sections

26
Q

anthozoa pharynx

A

muscular portion of gastrovascular cavity for pulling prey inward and expelling particles

27
Q

anthozoa retractor muscles

A

expand and contract body

28
Q

anthozoa primary septum

A

one of six thin walls that divide body into sections; provides support and increased surface area

29
Q

anthozoa secondary septum

A

further subdivides the body

30
Q

anthozoa pedal disk

A

fleshy base that attaches organism to substrate

31
Q

anthozoa acontia

A

contain cnidocytes and extend through mouth to subdue prey or deter predators

animal bio lab test 1 (7 decks)

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