Jo O'Bar
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Biology Quiz on Sarcopterygii, created by Jo O'Bar on 13/10/2018.

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Jo O'Bar
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Sarcopterygii

Question 1 of 19

1

The two main clades of Osteichthyes are Actinopterygii and Elasmobranchii.

Select one of the following:

  • True
  • False

Explanation

Question 2 of 19

1

Select from the dropdown lists to complete the text.

Actinopterygii are ( ray-finned, lobe-finned ) fishes, and Sarcopterygii are ( ray-finned, lobe-finned ) fishes.

Explanation

Question 3 of 19

1

Which of these are traits of Osteichthyes?

Select one or more of the following:

  • teeth embedded in dermal margin mouth bones

  • teeth connected to mouth bones by collagen

  • dermal bones extend into roof of mouth to cover palate

  • Gas containing structure used for buoyancy

  • Oily liver used for buoyancy

Explanation

Question 4 of 19

1

In Osteichthyes, asymmetrical fin skeleton is an ancestral trait.

Select one of the following:

  • True
  • False

Explanation

Question 5 of 19

1

Select from the dropdown lists to complete the text.

Early forms of Osteichthyes had ( thick, thin ) scales, while modern Osteichthyes have ( thick, thin ) scales

Explanation

Question 6 of 19

1

Actinopterygian scales: ()
Sarcopterygian scales: ()

Drag and drop to complete the text.

    enamel
    ganoine
    dentine-like layer
    cosmine

Explanation

Question 7 of 19

1

Compare the Skulls of the following:

: complete dermal skull roof and no mobility of upper jaw

: complete dermal bone of skull

: reduced # dermal bones in skull, greater mobility marginal mouth bones of upper jaw, maxillae and premaxillae

Drag and drop to complete the text.

    basal Actinopterygian
    Sarcopterygian
    derived actinopterygian

Explanation

Question 8 of 19

1

Select from the dropdown lists to complete the text.

( Actinopterygian, Sarcopterygian ) brains develop by eversion, folding cerebral hemispheres ( outward, inward ).

( Sarcopterygian, Actinopterygian ) brains develop by cerebral hemispheres folding ( inward, outward ) on themselves (as in Humans)

Explanation

Question 9 of 19

1

Select from the dropdown lists to complete the text.

Early Sarcopterygii were ( cylindrical, compressiform, elongate ) and ( 20-70, 40-90, 10-50 ) cm long. They had ( two, one ) dorsal fins and a distinct upper lobe on the ( heterocercal, lunate ) caudal fin. They were most diverse during the ( Paleozoic, Mesozoic, Cenozoic ).

Explanation

Question 10 of 19

1

The three major lineages of Sarcopterygii are:

Select one or more of the following:

  • Acinistia

  • Dipnoi

  • Tetrapodomorpha

  • Bodianus

  • Cephalopholis

Explanation

Question 11 of 19

1

Actinistia are also known as:

Select one of the following:

  • coelacanths

  • lungfishes

  • four-footed fish

Explanation

Question 12 of 19

1

What are the two derived characters of Actinistia?

Select one or more of the following:

  • dorsal fin that is supported by a plate of bone but lack an internal lob

  • symmetrical three-lobed tail with contral fleshy lob that ends in fringe of rays

  • Loss of tooth bearing dermal bones

  • fin skeleton

Explanation

Question 13 of 19

1

Coelacanths (Actinistia) have a vestigial lung.

Select one of the following:

  • True
  • False

Explanation

Question 14 of 19

1

What are the derived characters of Dipnoi?

Select one or more of the following:

  • Loss of tooth bearing dermal bones

  • Fusion of palatoquadrate to cranium

  • teeth scattered over dermal bones

  • Symmetrical three-lobed tail with central flesy lob that ends in fringe of rays

Explanation

Question 15 of 19

1

Actinistia is the largest genome among vertebrates.

Select one of the following:

  • True
  • False

Explanation

Question 16 of 19

1

Dipnoans retained paired lungs.

Select one of the following:

  • True
  • False

Explanation

Question 17 of 19

1

There is currently one extant species of Tetrapodomorpha fish.

Select one of the following:

  • True
  • False

Explanation

Question 18 of 19

1

What are the derived characters of Tetrapodomorpha?

Select one or more of the following:

  • Fin skeleton

  • Choanae

  • fusion of palatoquadrate to cranium

  • loss of tooth-bearing dermal bones

Explanation

Question 19 of 19

1

Choanae are...

Select one of the following:

  • internal nostrils

  • fin skeletons

  • retained paired lungs

  • fat-filled vestigial lungs

Explanation

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