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Biology 202- Organism Biology > Chapter 33 > Flashcards

Chapter 33 Flashcards

1
Q

invertebrates are animals that lack a ________________

A

vertebral column or backbone

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2
Q

____________ of all animals are invertebrates

A

95%

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3
Q

___________ are animals that do possess a vertebral column

A

vertebrates

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4
Q

_______________ of animals species are vertebrates

A

only 5%

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5
Q

__________________ is the only animal group that contains vertebrates

A

chordate

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6
Q
  • sponges
  • aquatic
  • assymetrical
  • no tissue tissues
  • aggregates of special cells
A

porifera

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7
Q

porifera are _________ as adults yet _______ as larvae

A

sessile, free-swimming

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8
Q

porifera reproduce

A

asexually by fragmentation

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9
Q

___________________ eggs and sperm are released into the water and fertilization occurs externally

A

asexual reproduction by fragmentation

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10
Q

porifera are _________________

A

filter feeders

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11
Q
  • all are aquatic-radially symmetrical
  • diploplastic
  • sexual reproduction occurred externally
  • a central digestive compartment
  • tentacles surround mouth and anus
A

cnidaria

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12
Q

a central digestive compartment. A single opening to the gastrovascular cavity serves as both mouth and anus

A

gastrovascular cavity

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13
Q

____________ surround mouth/anus

A

tentacles

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14
Q

tentacles are lined with stinging cells called _______________ that capture food

A

cynidocytes

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15
Q

cnidarians exists in one of two shapes

A
  • medusae

- polyps

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16
Q

___________ are free swimming cnidaria like see jellies

A

medusa

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17
Q

_____________ are sessile cnidaria like sea anemones hydras or corals

A

polyps

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18
Q

flatworms

A

platyhelminthes

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19
Q

platyhelmithes are _________________

A

aquatic, moist terrestrial, or parasitic within other organisms

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20
Q

platehelminthes are _________________ symmetrical

A

bilaterally

this gives a definite anterior and posterior end

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21
Q

3 more qualities of a platyhelminthes

A
  • triploblastic
  • lophotrochozoan protostomes
  • accelomate
  • possess a gastrovascular cavity
  • planarians
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22
Q

examples of parasitic flatworms/ platyhelminthes

A

-flukes and tapeworms

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23
Q

___________________ is a free living platyhelminthes in marine, freshwater or moist terrestrial habitats

A

planarians

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24
Q

rotifera are _________________

A

aquatic

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25
Q

rotifera are all ________________________ and have a ________________ colem

A

microscopic

psedocolemeate

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26
Q

rodifers possess a _______________

A

a complete digestive tract for food processing with an opening at each end

  • a mouth at the anterior end and an anus at the posterior
  • a one way tub
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27
Q

rotifers produce _________________ by way of ____________________

A

asexually

parthenogenesis

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28
Q

in parthenogenesis females produce offspring from ____________________

A

unfertilization

29
Q

_________________ the second largest animal group

30
Q

mollusks are _________________

A

marine, some freshwater or moist terrestrial

31
Q

mollusca are ___________

A

eucolemate

32
Q

two main regions possessed by a mollusca

A
  • muscular foot

- soft mental

33
Q

along the ventral or bottom side of a mollusca used for movement

A

muscular foot

34
Q

along the dorsal top side. Surrounds all of the body organs. It secretes a shell to the outside for protection

A

soft mental

35
Q

shelled animals

36
Q

a mollusca that possess an eight plates shell. Feed using scraping organs called radula

37
Q

a mollusca that include snails and slugs. Slugs have lost their shells. feed using radula.

A

gastropods

38
Q

a sea slug

A

nudibranch

39
Q

a mollusca that includes clams, oysters, and scallops. They are filter feeders. Food is drawn in by water. Their name comes from having two shells hinged together

40
Q

a mollusca that includes nautiluses, squids and octopi. Feed using their arms tenticles and grasping beak

A

cephalopods

41
Q

about cephalopod shells
octopuses-
squid-

A

no shell

internalized shell

42
Q

________________ are segmented worms. There are 3 different types of annelids, each found in a different type of habitat

43
Q

_____________ marine annelid

A

polychaete

44
Q

________________ freshwater annelid

45
Q

_____________________ moist terrestrial annelid

A

earthworms

46
Q

annelids exhibit ________________

A

segmentation also known as metamerism

  • the external body is visibly segmented
  • the internal body is also partitioned
47
Q

in a segmented worm each ___________________ is repeated in each segment

A

organ system

48
Q

______________ are roundworms. Aquatic, terrestrial, parasitic found everywhere.
surrounded by a nonliving culture. pseudocoelmate

49
Q

nematodes undergo _________________________ in order to grow

A

ecdysis (molting)

50
Q

________________ a model organism is biology. a nematod

A

caenorhabditis

51
Q

____________________ a nematod. a parasite that blocks lymph vessels and cause severe swelling called elephantiasis

A

wuchereria bancrofti

52
Q

_______________ are the largest group. found in all habitats. Segmented but their regions are fused into functional regions of the body called tagmata

A

arthropoda

53
Q

Segmented but their regions are fused into functional regions of the body called __________________

54
Q

two tagmatas that many arthropods possess

A

cephalothorax and abdomen

55
Q

one arthropods possess 3 tagmata

A

-head, thorax, abdomen

56
Q

____________possessed by arthropods used for walking, swimming, flying, eating, mating, fighting, sensing

A

jointed appendages

57
Q

an external nonliving cuticle of a arthropod made of

58
Q

some insects undergo complete ____________________

A

metamorphosis, a total reangement of body plan between larval and adult stage

59
Q

____________ arthropods: arachnids (spiders, scorpions, ricks, and mites) and horseshoe crabs

A

chelicerates

60
Q

________________ arthropods: that contain crabs, lobsters, barnacles, and isopods

A

crustaceans

61
Q

__________________ arthropods: centipedes, millipedes

62
Q

______________________ largest group of arthropods

63
Q

what are insects successful

A
  • they are capable of flight

- only arthropods undergo complete metamorphosis

64
Q

metamorphosis reduces _________

A

competition between larvae and adult.

65
Q

entirely marine, dueterostome development.

A

echinoderms

66
Q

echinoderms begin as larvae that are ____________________ symmetrical and are ________________ as adults

A

bilateral

radial-pentaradial

67
Q

echinoderms possess an _____________ that projects outward. They appear as bumps in the skin of sea stars and cucumbers

A

endoskeleton

68
Q

echinoderms possess a __________________ of internal canals. Used for locomotion. The canals end in tube feet that sweet and extend for movement

A

water vascular system

Biology 202- Organism Biology (30 decks)

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