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Marine Biology > Chapter 7 > Flashcards

Chapter 7 Flashcards

1
Q

Large hole at the top of a sponge

A

Osculum

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2
Q

When one organism lives on or in another without harming it

A

Symbiosis (commensalism)

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3
Q

Sponges live in what two environments

A

Marine and Fresh Water

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4
Q

Animals that strain their food from the water are

A

Filter feeders

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5
Q

The term for organisms that are attached to a substrate

A

Sessile

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6
Q

Cnidarians get their name from what type of cell

A

Cnidoblasts; Cnidocytes (nematocysts)

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7
Q

The sessile stage in the lifecycle of a jellyfish

A

Polyp

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8
Q

Two causes of coral bleaching

A

Sedimentation & global warming

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9
Q

The symbiotic dinoflagellate algae that lives in coral polyps and the two things the produce

A

Zooxanthellae: Food & Oxygen

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10
Q

Process by which these organisms repair/replace body parts

A

Regeneration

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11
Q

Organisms that obtains its food by living in or on the body of another (it’s host).

A

Parasite

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12
Q

Movement in Echinoderms is accomplished by

A

Tube Feet

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13
Q

To possess both male and female sex organs and be able to produce eggs and sperm

A

Hermaphrodite

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14
Q

Material that arthropods exoskeleton is made of

A

Chitin

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15
Q

The process of molting is related to the live function of

A

Growth

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16
Q

Shrimp-like animals that baleen whales and fish thrive on

A

Krill

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17
Q

Feathery appendages of a barnacle used to obtain food

A

Cirri on legs

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18
Q

Two main body segments of these bilaterally symmetrical crustaceans

A

Cephalothorax & Abdomen

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19
Q

The membrane that lines the inside of mollusk shells and produce calcium carbonate

A

Mantle

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20
Q

Protein fibers produced by mussels for attachment to a substrate

A

Byssal threads

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21
Q

The name of the toothed structure used by Gastropods to feed

A

Radula

22
Q

Pigmented cells that enable the squid and octopus to change colors

A

Chromatophores

23
Q

The mollusk without a shell that evolved toxicity as a defense

A

Nudibranch

24
Q

What group has a simple body plan made up cells that are not complex tissues

A

Sponges

25
Q

A group with radial symmetry and consists of sea anemones, jellyfish, and coral

A

Cnidaria

26
Q

What is the specific name for the form Cnidarians can take in the “sessile” life stage

A

Polyp

27
Q

What is the name for the “stinging cells” Cnidarians use to help capture prey

A

Nematocysts

28
Q

Which layer of cells form the outer body wall of Cnidarian

A

Epidermis

29
Q

Which phylum consists of animals that have a basic body plan, a mantle, and a set of radula

A

Mollusks

30
Q

Which class of mollusk is characterized by having a stomach foot

A

Gastropods

31
Q

Which Cephalopods have eight arms, two tentacles, and an internal shell

A

Cuttlefish

32
Q

Animals with segmented, bilaterally symmetrical bodies, jointed appendages, and exoskeletons

A

Arthropods

33
Q

What is the name for the gelatinous, narrow middle layer that does not contain cells

A

Mesoglea

34
Q

A type of hydrozoan that is actually a float made of a drifting colony of polyps

A

Siphonophores

35
Q

Which class of Cnidaria consists of the most dangerous animals known (box jellyfish)

A

Cubozoa

36
Q

An animal that has ciliary combs, radial symmetry, and tentacles with no stinging cells

A

Comb jellyfish

37
Q

What is the name for a long, fleshy tube used by ribbon worms to entangle prey

A

Proboscis

38
Q

Which type of worm has a symbiotic relationship with bacteria

A

Beard Worms

39
Q

What is the name for a ribbon of small teeth used by mollusk in feeding

A

Radula

40
Q

What has a set of tentacles arranged in a horse-shaped, circular, or coiled fashion

A

Lophophore

41
Q

Which animals superficially resemble true spiders and use proboscis to capture prey

A

Sea spiders

42
Q

Which phylum actually means “spiny-skinned” and consists of sea star and sea cucumbers

A

Echinodermata

43
Q

Echinoderms that have a round, rigid, she’ll-like body with movable spines and eat seaweeds

A

Sea Urchins

44
Q

What is the name for the defense mechanism used by sea cucumbers

A

Evisceration

45
Q

An Echinoderm that uses its arms for moving and has tube feet that lack suckers

A

Brittle stars

46
Q

What is the name of the body cavity made from the mesodermic tissue get complex animals

A

Coelem

47
Q

What organisms filter food particles from the water by pumping water through their bodies

A

Filter feeder

48
Q

What have only three pairs of legs and tend to live at the sea’s edge as scavengers

A

Insects

49
Q

What is the name for an external skeleton secreted by the underlying layer of tissue

A

Exoskeleton

50
Q

What is the common name for the chordates without backbone

A

Protochordates

51
Q

What is the ability to grow lost or damaged body parts, as seen in Echinoderms

A

Regeneration

52
Q

The name of Porifera cells that, with their flagella, create an inward current

A

Choanocytes

Marine Biology (1 decks)

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