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5.10 Lab Exercise

5.10 Lab Exercise

Q Question 1 Not yet graded / 0.5 pts Examine the handful of "seeds" you've collected. Remember that you want 2 or 3 different types and that they can be seeds, beans, cereal, or pasta - anything that is smallish. Keep these handy - we will use this handful for later questions/steps in the experiment. Question 2 Not yet graded / 0.5 pts Now examine the tool you've selected to serve as your "beak". 1. Describe the "beak" you will be using to pick up "seeds". 2. Make a prediction - what type of "diet" (seeds) is your "bird" most likely to successfully pick up and eat? Explain why your beak is better suited for that kind of seed and not the others in your handful. Question 3 Not yet graded / 0.5 pts Now for the experiment! 1. Sprinkle your handful of seeds out on a flat surface that has enough room for there to be space, but not terribly large. Something with edges to keep them from scattering all over is helpful. A cookie sheet or baking pan, or other common kitchen items like a skillet or food storage container would work well too. 2. Get your "beak" ready, and set a timer for 30 seconds, and GO! Pick up as many seeds as you can with your tool in that 30 seconds. 3. Count the seeds you were able to pick up - keeping the types separate. Copy this table into the text box for your answers, and fill in the numbers from your handful of seeds and the experiment. Seed Foraging Results Seed Type Number at Start Number Picked Up Percent Picked up (# picked up / # at start) x 100 Question 4 Not yet graded / 0.5 pts What type of diet would best suit your "bird" species?

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1 Your Answer: 1. I gathered sunflower seeds with shells on (20 of them), small pasta elbows (20 of them). 2. The sunflower seeds differ in size and shape. Some are narrower and longer some are wider and shorter. They are all the same color but their appearance does differ. 3. Variation is necessary for natural selection to occur because some individuals/things are allowed to adapt to a changing environment.