A new winged species is discovered in the Amazon rainforest. Select the evidence that supports that this species’ wings are homologous to vertebrate animals and analogous to insect wings. Check all that apply.

Question

_____  The wings have an underlying bone structure.
_____  The wings are poisonous.
_____  Blood vessels are networked through the wings.
_____  The wings are covered in chitinous scales.

Clarify Question
  What is the key concept addressed by the question?
What type of thinking is required?

  Gather Content
What do you already know about homologous structures? What other information is related to the question?

  Choose Answer
Given what you now know, what information is most likely to produce the correct answer?

  Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
 

Answer 1

__X__  The wings have an underlying bone structure.
_____  The wings are poisonous.
__X__  Blood vessels are networked through the wings.
_____  The wings are covered in chitinous scales.

Clarify Question
  What is the key concept addressed by the question?
        · The question stem is asking you to select evidence supporting that the species’ wings are homologous to vertebrate wings and analogous to insect wings.
What type of thinking is required?
        · You are being asked to take what you already know and use, or apply, it to comparing homologous structures and analogous structures.

  Gather Content
What do you already know about homologous structures? What other information is related to the question?
        · Homologous structures may have different appearances and functions even though they are derived from the same common ancestral body part. Analogous structures may have different appearances, but similar functions even though they are not derived from the same common ancestral body part.

  Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
        · Of the options available, which ones describe structures you would find within vertebrate limbs, such as wings? Bones and blood vessels are found in vertebrate animals.

  Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
       · Answering this question correctly depended on your ability to use homologous structures in a new situation¼ If you got an incorrect answer, did you remember that homologous structures are derived from a common ancestor? Did you have trouble extending this evidence for evolution to determine the correct answer?