Question

the passage below describes an experiment. read the passage and then follow the instructions below. stem rust fungus is a type of fungus that grows on the stems of some plants. tiana put a tiny equal amount of stem rust fungus on ten wheat plants and ten barley plants. she then placed the plants in a greenhouse. three weeks later, the stem rust fungus had grown enough to be visible on the plant stems. tiana measured the amount of fungus on each stem. identify the question that tianas experiment can best answer. does stem rust fungus spread to the roots of barley plants more than to the roots of wheat plants? do plants kept in greenhouses have more stem rust fungus on their stems than plants kept outdoors? does more stem rust fungus grow on the stems of wheat plants than on the stems of barley plants?

Explanation:

Tiana's experiment involves placing equal amounts of stem rust fungus on wheat and barley plants and measuring the fungus growth on the stems after three - weeks in a greenhouse. The variables are the type of plant (wheat vs barley) and the measured outcome is the amount of fungus on the stems. So, the experiment is designed to compare the growth of stem rust fungus on the stems of these two types of plants.

Answer:

Does more stem rust fungus grow on the stems of wheat plants than on the stems of barley plants?