How many chambers does a frog's heart have?
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?
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.
Another name for upper shell.
Males have a greater number of ________ vertebrae
Used for swimming.
C. front limbs
D. hind limbs
Use for steering.
B. front limbs
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
Which of the following is NOT an adaptation for flight?
B. hollow bones
C. keeled sterna
D. fused collar bone
E. all of these are adaptations
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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