This is a worksheet I created to do a quick inquiry lab for my marine biology class. My students were given 3 plants and had to determine by experimentation if they were freshwater or saltwater plants. (All were freshwater - easily obtained from a petstore or online science catalog).
Students took a sample on a microscope slide. They sketched what they saw. They added a drop of saltwater and then sketched if the cells reacted.
Saltwater plants would not have reacted, while freshwater cells would shrink in the presence of salt water.
You will receive a Word document, so you may easily modify it to fit your classroom needs. :)
If you have any questions - I'd prefer you ask me BEFORE purchasing rather than leaving less than flattering feedback after purchasing. :)