What was the name of the fictional children's book of the book about a boy who turned himself into a plant?

I read this book in 4th grade and I was trying to figure this out. Please no useless comments because I really want to find out the name of this book.

What was the name of the fictional children's book of the book about a boy who turned himself into a plant?
"Top Secret" by John Reynods Gardiner


http://www.amazon.com/Top-Secret-John-Re... Allen Brewster, a fourth grader, decides to discover human photosynthesis for his school science project, his irritable teacher, Miss Green, calls his idea ridiculous and assigns a lipstick project instead. His parents are kind but unsupportive, but Allen is undeterred, especially when his tender and wise grandfather encourages him to pursue his research. Allen discovers that the biggest difference between hemoglobin and chlorophyll is that the former contains iron while the latter contains magnesium, so he decides to ingest foods that contain high levels of magnesium. He mixes salt water from an aquarium with peanut butter, Coco-Puffs, raw liver, and Mexican refried beans, runs the mixture through a blender, and drinks it. (Kids, don't try this at home!) After tinkering with his formula, he discovers that his skin has turned green, his taste buds have disappeared, he doesn't need to eat, and he craves sunlight. But then Allen faces numerous new obstacles. No one but his grandfather believes that he has discovered human photosynthesis. He gets aphids and starts sprouting roots. His crabby teacher ejects him from class and tells him not to come back until he looks like a normal human being. And once the government confirms that Allen has succeeded in discovering human photosynthesis, his project is classified as top secret, because it is a threat to national security! Will Allen ever be permitted to return to school? What will he do about the science fair? Will his nasty teacher ever get her comeuppance? "


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