AM
BIO224 EXAM QUESTIONS AND ANSWERS WITH COMPLETE
SOLUTIONS VERIFIED GRADED A++
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Terms in this set (52)
Monophyletic descended from a common evolutionary ancestor or
ancestral group
Paraphyletic descended from a common evolutionary
ancestor or ancestral group, but not including
all the descendant groups
Polyphyletic derived from more than one common
evolutionary ancestor or ancestral group and
therefore not suitable for placing in the
same taxon
Presence of embryonically derived
membrane. Tend to be more terrestrial,
but some are secondary aquatic species (sea
Amniotes
turtles and whales). Well established by the
late Devonian Period (416my). Early versions had
similar characteristics such as scales, no hair or
feathers, very dilute urine, simple lungs, and
single heart
ventricle. Amniotes also have oxygen
extraction, temperature control,
osmoregulation, and circulation.
Non-amniotes Absence of embryonically derived membrane
Sauropsids ("lizard face") Examples of amniotes
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and synapsids
Myxinoidea (Hagfish), Examples of non-amniotes
Condrichthyes,
Osteichthyes, Urodels,
Anura,
Gymnophiona
Myxinoidea (Hagfish) Cyclostomes
and
Petromyzontoidea
(Lamprey)
Elongate body form, Characteristics of Cyclostomes
limbless, scaleless.
No internal jaw bone
(Agnathans), no
complete vertebrae
but has cranium
Sharks, Rays, and Chondrichthyes
Neoselachii
Chondrichthyes "Cartilaginous fish"
Osteichthyes "Bony fish"
Ray finned osteichthyes, Actinopterygians
>27,000 species
Lobe finned Sarcopterygians
osteichthyes, most
closely related to
terrestrial vertebrates
(tetrapods) due to bony
structure of limbs (i.e.
Chondrostei,
Neopterygii)
Aquatic larval form and Amphibians (Lissamphibia)
terrestrial adult ("double
life"), all have bare
skin for
respiration and
osmoregulation (i.e.
Urodela, Anura,
Gymnophiona)
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