An example of a grad-school level question?
What is the main function of a plant stem?

An example of a grad-school level question?
In fruit flies, red eyes are dominant over sepia eyes. A male with red eyes is crossed with a female with sepia eyes producing first generation offspring that all had sepia eyes. What does this indicate about the flies that were crossed?

An example of a grad-school level question?
When athletes begin to exercise, their heart rates and respiration rates increase. At what level of organization does the human body coordinate these functions?

An example of a grad-school level question?
Which of the following describes a reason why companies irradiate some fruits and vegetables before they are sold to the public?