Biology Forums - Study Force

Birds differ from earlier vertebrates by
  a. their lack of scales.
  b. producing land eggs.
  c. the ability to maintain a constant body
  temperature through metabolic activities.
  d. the ability to fertilize eggs internally.
  e. their possession of a dorsal nerve cord.

Question 2

Which of the following is NOT a characteristic of
  birds?
  a. feathers modified from scales
  b. a four-chambered heart
  c. excellent vision
  d. migratory behavior
  e. teeth

Answer to q. 1

Answer: c

Answer to q. 2

Answer: e

So that's it? I get an expert answer then we move on with our lives? Not too bad :D