Plants for Food and Fibre: Going Further

Plant systems, soil and yield, applied to real farming decisions.

8 questions, free, marked as you go with a worked explanation on every one.

What this covers

A greenhouse grower raises the carbon dioxide in the air from 400 ppm to 900 ppm and the tomato plants grow faster. Which explanation fits photosynthesis?
A field of 4.5 hectares yields 27 tonnes of wheat. A neighbouring field of 6 hectares yields 33 tonnes. How many tonnes per hectare does the better-yielding field produce?
Which of these practices reduce soil erosion on Alberta farmland? Select all that apply.
Why does a farmer plant a legume such as peas in rotation with wheat?
A plant wilts on a hot afternoon even though the soil is damp. What is the most likely reason?
A seed packet claims 92 percent germination. A student plants 150 seeds and 126 come up. How many fewer seedlings is that than the packet promised?
A grower wants to test whether a new fertiliser increases lettuce growth. Which design would give the clearest answer?
Which parts of a plant are we eating in each of these foods? Select every food where the part eaten is a root.