BI-2034
Factors affecting photosynthesis
Biology · Secondary 4 · Medium · Factors affecting photosynthesis
A student grows tomato plants in nutrient solutions with different magnesium ion concentrations. At low magnesium levels, the plants are short and have low mass. At moderate levels, both height and mass increase. What is the role of magnesium that best explains this pattern?
- It is used to make cellulose in cell walls.
- It is needed to make chlorophyll for photosynthesis.
- It is the main source of energy for respiration.
- It is required for water uptake by osmosis in roots.
Sign in to check your answer and see the hint and the worked explanation. Free on PrepLab High.