What is the appropriate control for an experiment on the effect of nitrate fertilizer on germination of sunflower seeds?
Umm...NOT putting nitrate fertilizer on the seeds in a second planting? Apparently they're not teaching the scientific method in science class any more, so let's set this experiment up properly. You want to test the effect of nitrate fertilizer on sunflower plants. You will need: some plantable sunflower seeds--go to a garden center for these. I saw a kid try a sunflower growing experiment once. He planted seeds and they didn't grow. The teacher asked him where he got the seeds..."at Torchie's." Torchie's was a gas station, and he bought roasted sunflower seeds. Those won't grow at all. Anyway, you can't go to Torchie's anymore because Mr. Torchie sold his store to someone else. But don't go there anyway. some potting soil. two planting trays. some nitrate fertilizer. two watering cans. Label one "with fertilizer." Plant the same number of seeds in both trays in soil from the same bag. Label one "with fertilizer" and one "without fertilizer." Just water the "without fertilizer" tray. Use fertilizer according to directions on the label on the "with fertilizer" tray. Except for the fertilizer, don't do anything different--put them in the same window, make sure the cat doesn't get in either tray, don't give any other reason for one tray to grow better than the other. Keep records of which one grows better. This is a good, easy, fun experiment.
If you mean in an experiment then experiments are caused when you ask a question and try to find an answer. The hypothesis is the question you ask such as: Will fertilizer make a Sunflower grow faster? Hope that helped (P.S.) If scientific inquiry is something different than a scientific experiment= I'm sorry I didn't realize:(
if they don't get wet/moldy they don't go bad germination rate decreases after 3 years or so to 80% - given that they were healthy plants to begin with. If you want to keep them longer, freeze them. If you have old seeds and want to increase chances of germination, soak them for an hour or so before germinating in a wet napkin.
Sunflower is yellow and rose is red. Sunflower has sunflower seeds while rose has rose seeds. Sunflower is a flower and rose is a flower. Sunflower has eyes while rose has hands. Sunflower is a character in plants vs zombies while rose is used in romance. Sunflower has two leaves while rose has one leaf. Sunflower can kill zombies but not roses
They were never "invented". Sunflower seeds are just that, sunflower seeds. Seeds that contain the genetic makeup up sunflowers that will then germinate in the soil to become a sunflower which will make more sunflower seeds. The question "When did people begin eating sunflower seeds?" is another topic