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ZOOL 250: Invertebrate Zoology > Anthozoans and Ctenophores > Flashcards

Anthozoans and Ctenophores Flashcards

1
Q

What is the siphonoglyph?

A
  • Part of subphylum anthozoan anatomy
  • ciliated channel/groove at the corners of their mouths.
  • the cilia serve to pump water into the gastrovascular cavity
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2
Q

what is the coelenteron?

A

gastrovascular cavity within anthozoans

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3
Q

What are acrorhagi?

A

specialized tentacles for fighting, used purely for injuring competitors

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4
Q

What are some key features of subclass hexacorallia?

A
  • Multiples of 6 tentacles
  • it can be a solitary species with no protective covering
  • or it can be a colonial species, however colonial forms are NEVER polymorphic
  • CaCO3 skeletons
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5
Q

What does hermatypic mean?

A
  • reef building
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6
Q

What are some Key features of subclass octocorallia

A
  • has 8 pinnate tentacles
  • this subclass is only colonial, with some polymorphic
  • Has a thick mesoglea or CaCO3 in mesoglea for skeletal support
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7
Q

What are the two distinguishing features of phylum Ctenophora (comb jellies)?

A
  • Cilia are fused into rows (combs)
  • they have colloblasts, cells that are sticky and used to capture prey
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8
Q

What level of tissue organization do ctenophores have?

A
  • they are diploblasts
  • however, they do have some early developing muscle tissue that might be from mesoderm
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9
Q

Ctenophores do not have a _____ ______ system, but they do have a _____ _____

A

Ctenophores do not have a CENTRALIZED NERVOUS system, but they do have a NERVE NET

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10
Q

Ctenophores have an ______ gut

A

INCOMPLETE GUT

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11
Q

What are the two classes of Ctenophores?

A
  • Tentaculata
  • Nuda
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12
Q

What are the differences between Tentaculata and Nuda?

A
  • Tentaculata have tentacles or oral lobes
  • Nuda have no tentacles or oral lobs
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13
Q

Ctenophores have _____ cleavage, while cnidarians have ______

A

Ctenophores have determinate cleavage, while cnidarians have indeterminant

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14
Q

Ctenophores have _______________sexuality, while cnidarians have _________________

A

Ctenophores have hermaphorditic sexuality, while cnidarians have gonochoristic

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15
Q

Which phylum has Nematocysts: Ctenophores or Cnidarians?

A

CNIDARIANS

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16
Q

Which phylum has colloblasts: Ctenophores or Cnidarians?

A

CTENOPHORES

17
Q

The common developmental stage for ctenophores is….

18
Q

Cnidarians and Ctenophores are ______- similar

A

SUPERFICIALLY

ZOOL 250: Invertebrate Zoology (11 decks)

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