Subclasses of Amphibia Flashcards

1
Q

What is the subclass with caecilians?

A

Apoda

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2
Q

What does Apoda mean?

A

without foot

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3
Q

What is the subclass with salamanders & newts?

A

Urodela

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4
Q

What are the characteristics of Apoda

A

-wormlike body
-many vertebrae w/ long ribs
-limbless
-terminal anus
-males have protrusible copulatory organ
-viviparous or oviparous

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5
Q

What does Urodela mean?

A

tail evident

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6
Q

What is the subclass with frogs and toads?

A

Anura

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7
Q

What organism is in the subclass Apoda

A

caecilians

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8
Q

What are the characteristics of Urodela

A

-body w/ head, trunk, and long tail
-no scales
-two pairs of equal limbs
-direct development among terrestrial species

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9
Q

What organisms are in Urodela?

A

Salamanders and Newts

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10
Q

What organisms are in Anura?

A

frogs and toads

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11
Q

What are characteristics of Anura?

A

-head & trunk fused
-no tail or scales
-two pairs of limb
-hind limbs elongated
-large mouth
-lungs
-tadpole larva stage

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12
Q

What does Anura mean?

A

without tail

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