The control group outs the one that you don't change. The reason you don't change it is because you use it as a comparison with the other groups.
When Went placed the agar block on one side of the decapitated shoot, the shoot curved away from the agar as it grew. This demonstrated that some kind of hormonal signal had diffused into the agar from the coleoptile tips. ... Went's experiment represented the first time that anyone had isolated a hormone from plants.
Answer:
"nucleic acids", "deoxyribose sugar, and the "phosphate"
Calculating limiting and excess reactants?
