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How many vertebrae does a frog have? A. 9 B. 12 C. 15 D. 21 How many chambers does a frog's heart have? A. 3 B. 4 C. 5 D. 6 How long does the larval

How many vertebrae does a frog have?
A. 9
B. 12
C. 15
D.  21
How many chambers does a frog's heart have?
A. 3
B. 4
C. 5
D. 6
How long does the larval stage of an amphibian last?
A. several weeks to 1 year
B. 24 hours
C. exactly 21 days
D. 9 months
How many toes are on the front feet of a frog?
A. 2
B. 3
C. 4
D. 5
The front plates covering the upper shell.
A. Central plates
B. Pigal plates
C. Neutral plates
D. Nucal plates
Another name for the lower shell.
A. plastron
B. carapace
C. scute
D. head
Another name for upper shell.
A. plastron
B. carapace
C. scute
D. head
Males have a greater number of ________ vertebrae
A. Caudal
B. Sacral
C. Thoracocolumber
D. Cervical
Used for swimming.
A. carapace
B. tail
C. front limbs
D. hind limbs
Use for steering.
A. claw
B. front limbs
C. head
D. hind limbs
Which of the following is NOT true concerning altricial birds?
A. amniotic egg
B. helpless at birth
C. feathered at birth
D. featherless at birth
Birds form an important symbiosis (relationship) with
A. mushrooms
B. rats
C. plants
D. bacteria
Forewing bone
A. scapula
B. tibula
C. clavicle
D. humerus
Which of the following is NOT an adaptation for flight?
A. feathers
B. hollow bones
C. keeled sterna
D. fused collar bone
E. all of these are adaptations
Archaeopteryx is
A. a modern yellow dove
B. link between birds and reptiles
C. a flying dinosaur
D. a figment of my imagination.

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