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Biodiversity Exam 3 > Animals IV > Flashcards

Animals IV Flashcards

1
Q

The Deuterostomes can be divided into two main groups. What is the name of these?

A

Ambulacrarians and Chordates

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2
Q

Echinoderms (Starfish) are sister to _____________

A

Hemichordates

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3
Q

Radial symmetry is unique to what Deuterostome group?

A

Echinoderms

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4
Q

What 3 characters are unique to Chordates?

A

Notochord, dorsal hollow nerve cord, post anal tail

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5
Q

What characters are unique to Vertebrates

A

Ventral chord

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6
Q

T/F Deuterostomes are coelmate

A

True

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7
Q

Earliest Deuterostomes date back to the __________

A

Cambrian, 520 mya

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8
Q

T/F Hemichordates belong in the Chordate group

A

False

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9
Q

T/F Hemichordates have bilateral symmetry

A

True

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10
Q

T/F Sea urchins are Echinoderms

A

True!

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11
Q

Name the 5 Echinoderm clades

A

Asteroidea (Sea stars), Ophi (Brittle stars), Echinodea (urchins), Crinoidea (Lilies), Holothuroidea (Sea Cucumbers).
ALWAYS OBLITERATE EVERY CUTE HAMSTER!

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12
Q

Echinoderm larvae are ___________ symmetrical

A

bilaterally

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13
Q

Echinoderms have a endo/exo derm

A

endoderm

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14
Q

T/F there are hermaphroditic starfish

A

True

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15
Q

What kind of vascular system do Echinoderms have?

A

Water vascular system

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16
Q

Name the structure that allows Echinoderms to grasp prey and move?

A

Tube feet

17
Q

Chordates date back to the _______________ era

A

Cambrian

18
Q

All Chordates have these 5 characters

A
  1. Notochord 2. Postnatal tail 3. Pharyngeal slits 4. Dorsal neve chord 5. Endostyle
    NO PEEING PEOPLE DURING EVENTS
19
Q

Name the 3 Chordate groups

A

Cephalochordates (Lancelets), Urochordates (Tunicates) and Vertebrates

20
Q

Vertebrates can be broken into two groups called ?

A

Jawless fishes (Hagfish and Lampreys) and Gnathostomes (jaw mouths, everything else)

21
Q

Name the 4 characteristics of vertebrates

A

Anterior skull with brain, rigid endoskeleton (bony or cartilaginous, well developed closed circulatory system driven by heart, and coelom w suspended organs

22
Q

The teeth of cartilaginous fish are called

A

conodonts

23
Q

Jaws are presumed to have developed from this structure in fish

A

gill arches

24
Q

What group of fish are more closely related to tetrapods?

A

lungfish

25
Q

What is the oldest undisputed vertebrate fossil

A

Haikou

Biodiversity Exam 3 (6 decks)

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