Question

the following describes a lab on natural selection.
the materials needed for this lab included a bowl of toothpicks, a bowl of dried macaroni, a spoon, forceps, a binder clip, scissors, a plastic cup, and a timing device. the procedure for this lab was performed as follows: the number of toothpicks able to be consumed (picked up and placed into the cup) in a 30 - second period by the spoon was recorded. the trial was repeated three times, then the spoons ability to consume macaroni for 30 seconds was recorded for the three trials. this procedure was repeated with the forceps, the binder clip, and scissors to represent each birds beak. averages were calculated for each beaks ability to consume each food item.
what are the possible conclusions or outcomes one could reach from this experiment? (choose 3)
a the spoon is best used for consuming macaroni over toothpicks.
b the higher the temperature, the better the forceps work at collecting food.
c different beak shapes are better or worse than others at consuming different foods.
d the mass of the food consumed is less than what they need to survive.
e the plastic cup represents the stomach of the bird.

Explanation:

• Option A: The lab records the spoon's ability to consume macaroni vs toothpicks. If the spoon picks up more macaroni than toothpicks in 30 seconds, this conclusion is valid.
• Option B: The lab procedure does not involve temperature, so this is irrelevant.
• Option C: The lab uses different tools (representing beak shapes) to consume different foods (toothpicks, macaroni), and calculating averages for each tool's ability implies comparing which beak shapes are better for which foods.
• Option D: The lab focuses on the number of food items consumed, not the mass or survival needs, so this is not supported.
• Option E: The plastic cup is where the food is placed after being picked up, analogous to a bird's stomach storing food, so this is a valid conclusion about the model.

Answer:

A. The spoon is best used for consuming macaroni over toothpicks.
C. Different beak shapes are better or worse than others at consuming different foods.
E. The plastic cup represents the stomach of the bird.