Chp 33 Intro to Invertebrates Phylum Breakdown Flashcards

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1
Q

What is in the phylum porifera?

A

Sponges

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2
Q

What are some characteristics of Porifera?

A
  • lack true tissues
  • Have choanocytes -> collar cells/flagellated cells that ingest bacteria and tiny food particles
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3
Q

What consists of the phylum cnidaria?

A
  • hydras
  • jellies
  • sea anemones
  • corals
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4
Q

What are the characteristics of cnidaria?

A
  • unique stinging structures (nematocytes) located in specialized cells (cnidocytes)
  • diploblastic
  • radially symmetrical
  • Has a gastrovascular cavity (digestive sac with a single opening)
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5
Q

What consists of the phylum platyhelminthes?

A

Flatworms

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6
Q

What are some characteristics of platyhelminthes?

A
  • dorsoventrally flattened acoelomates
  • Gastrovascular cavity or no digestive tract
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7
Q

What consists of the phylum Rotifera?

A

Rotifers

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8
Q

What are some characteristics of Rotifera?

A
  • Pseudocoelomates with alimentary canal (digestive tube with mouth and anus)
  • jaws (trophi)
  • head with ciliated crown
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9
Q

What are characteristics of the phylums Lophophorates, Ectoprocta, and Brachiopoda?

A
  • Coelomates with lophophores (feeding structures bearing ciliated tentacles)
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10
Q

What consist of phylum Mollusca?

A
  • clams
  • snails
  • squids
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11
Q

What are some characteristics of Mollusca?

A
  • Coelomates with three main body
    parts (muscular foot, visceral mass,
    mantle)
  • coelom reduce
  • most have
    hard shell made of calcium carbonate
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12
Q

What consists of the phylum Annelida?

A

Segmented worms

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13
Q

What are some characteristics of Annelida?

A

Coelomates with segmented body
wall and internal organs (except digestive tract, which is unsegmented)

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14
Q

What consists of the phylum Nematoda?

A

roundworms

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15
Q

What are some characteristics of Nematoda?

A
  • Cylindrical pseudocoelomates with
    tapered ends
    -no circulatory system
  • undergo ecdysis
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16
Q

What consists of arthropoda?

A
  • spiders
  • centipedes
  • crustaceans
  • insects
17
Q

What are some characteristics of arthropoda?

A
  • Coelomates with segmented body,
    jointed appendages, and exoskeleton
    made of protein and chitin
18
Q

What consists of echinodermata?

A
  • sea stars
  • sea urchins
19
Q

What are some characteristics of echinodermata?

A
  • Coelomates with bilaterally sym-
    metrical larvae and five-part body
    organization as adults
  • unique water
    vascular system
  • endoskeleton
20
Q

What consists of the chordata?

A
  • Lancelets
  • Tunicates
  • Vertebrates
21
Q

What are some characteristics of chordata?

A
  • Coelomates with notochord
  • dorsal, hollow nerve cord
  • pharyngeal slits
  • post-anal tail