An experiment was designed to test the following hypothesis: Dark green plantsproduce more chlorophyll and therefore have an increase in
photosynthesis compared to light green plants. What is the next step of the
this process?

the next step is providing dark green plant and light green plant.

Explanation:

starchy vegetables are high in carbohydrates.

starchy vegetables contain more carbohydrates than non-starchy vegetables.

explanation:

there are two primary categories of carbohydrates, essentially differentiated on the basis of their carbohydrate content (which is in the form of starch - a complex carbohydrate):

those vegetables which contain little amounts of starch are termed as non-starchy vegetables, and some examples include: artichokes, broccoli and bean sprouts.

vegetables high in their starch content are distinguished as starchy vegetables, and some examples include: potatoes, chickpeas and corn.