PLANT PHYSIOLOGY

Study / exam questions/ quiz - Nutrition III – Micronutrients and Metals

· What is the major factor that distinguishes macronutrients from micronutrients?

· Compare and contrast the strategies used by plants to ensure adequate levels of uptake of trace micronutrients with those that protect them from the harmful effects of many of these elements. Include in your discussion the roles of transporters, chelators and chaperones, and sequestration.

· Identify one biological function for each of the micronutrients.

· What is the primary function of Mn in plants and where does this element accumulate?

· True or False: The Mn cluster only occurs in angiosperms.

· True or False: Molybdenum is assimilated from the soil as MoCo.

· Of all the micronutrients, Ni was most recently shown to be essential. Describe Ni’s role in plants and how its essentiality was demonstrated. What evidence suggests that Ni may have additional, undescribed roles?

· Summarize two strategies for metal tolerance and one for metal hyperaccumulation.

· Compare and contrast objectives and strategies for phytoremediation, phytomining and biofortification.