How did the addition of a gene for citrate synthesis increase the tolerance of tobacco and papaya plants to high aluminum concentrations in the soil?

If a plant is deficient in __________, it will not be able to make DNA.

Soil could be deficient in any of the following nutrients. If you had to supply one of them, which would be needed in the smallest amount?

Which of the following is a true statement regarding mineral deficiency symptoms in plants?

When you add "plant food" to your potted geraniums, what are you actually providing the plant with?

What supplies the energy for most of the microorganisms in the rhizosphere?

The inorganic nutrient most often lacking in crops isa. carbon.b. nitrogen.c. phosphorus.d. potassium.

Consider the following statements regarding limiting nutrients. Select True or False for each statement.T/F Nitrogen (N), phosphorus (P), and potassium (K) are common examples.T/F Their presence limits the availability of micronutrients.T/F Their availability tends to limit plant growth.T/F Certain macronutrients and micronutrients can be considered limiting nutrients.

Micronutrients are needed in very small amounts becausea. most of them are mobile in the plant.b. most serve mainly as cofactors of enzymes.c. most are supplied in large enough quantities in seeds.d. they play only a minor role in the growth and health of the plant.