Studies of the Columbines Aquilegia Formosa and A

question 20

Multiple Choice

Studies of the columbines Aquilegia formosa and A. pubescens illustrate that

• A) hybrids rarely form between these species because the two species are not interfertile.
• B) hawkmoths prefer one species over the other because of differences between the species in the color of light that they emit.
• C) hawkmoths show equal preference for the two species if the flowers of A. formosa are turned upright.
• D) All of the above
• E) None of the above