Question

Photosynthesis is a process that occurs in plants by which the plant converts energy from the sun into food for the plant. Plants that are deprived of sunlight do not photosynthesize properly. Sylvia believes other factors can affect photosynthesis and is trying to devise an experiment to test her hypothesis. Which experimental design should Sylvia try?

Answer 1

depends on 42

subjecting an experimental group of plants to an atmosphere with a higher oxygen concentration

subjecting an experimental group of plants to an atmosphere with a higher carbon dioxide concentration

subjecting an experimental group of plants to a special soil that has been enriched with a new fertilizer

subjecting an experimental group of plants to air that gaseous nitrogen has been added to

Answer 2

Unless there are types of experimental design I'm not aware of,

she's measuring the rate of photosynthesis

she should keep sunlight consistent for all groups of plants

for her control group she should have plants that she is not testing any other possible photosynthesis factors on

and as independent variable, she should have groups of her factors.