PLEASE HELP ME PLEASE HELP ME

What type of plant is good for a bioassay and where can i buy it? i only have a month.

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin

Consider the following planned experiment. factor experimental group control group light exposure tots of sun tots of sun amount of water weekly weekly type of soil nutrient rich nutrient rich size of pot large which variable is being tested in this experiment? small a. size of pot b. type of soil c. light exposure d. amount of water