quiz for plant nutrition

Which of the following substances does a plant obtain from the air?

• Carbon

• Magnesium

• Water

• All of the listed responses are correct.

• Nitrogen

Which of the following would be considered a sustainable agricultural practice?

• Flooding fields

• Drip irrigation

• Phytoremediation

• Draining aquifers to irrigate crops

• The second and third responses are correct.

What is the goal of phytoremediation?

• To clean contaminated sites by using plants that have the ability to extract and store soil pollutants

• To replace lost minerals in soil

• To test whether an element is essential to a certain species of plant

• To grow crops such as alfalfa and wheat that provide good ground cover

• To increase resistance to aluminum toxicity

The biological process that produces 96% of the dry mass of a plant is called __________.

• cation exchange

• transpiration

• photosynthesis

• oxidation

• respiration

If a plant's leaves are yellowing, it may be that the plant is deficient in the elements needed to make chlorophyll, one of which is __________.

• copper

• molybdenum

• sulfur

• magnesium

• phosphorus

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?

• Potassium

• Nitrogen

• Sulfur

• Iron

• Phosphorus