Plant Nutrition Pretest

What is the role of Zinc (Zn) in plants?

• It is a macronutrient.

• It is involved in chlorophyll synthesis.

• It is a component of enzymes and is involved in tryptophan synthesis.

• It is only important for root development.

What aspect of plant development is Zinc (Zn) associated with?

• Leaf coloration

• Fruit, seed, and root development

• Water absorption

• Stem elongation

How does Zinc (Zn) contribute to a plant's resilience?

• Enhances water retention

• Provides crop stress protection

• Increases sunlight absorption

• Promotes rapid stem growth

What is the process called where ammonium ions (NH4+) are produced by saprophytic bacteria and fungi by incorporating nitrogenous compounds into amino acids and proteins?

• Nitrification

• Assimilation

• Ammonification

• Denitrification

During which process do soil-dwelling bacteria oxidize ammonium ions into nitrite ions (NO2-)?

• Nitrification

• Assimilation

• Ammonification

• Denitrification

What is the term for the formation of organic nitrogen compounds from inorganic nitrogen compounds present in the environment?

• Nitrification

• Ammonification

• Assimilation

• Denitrification

What process involves bacteria reducing nitrate to volatile nitrogen form?

• Nitrogen fixation

• Photosynthesis

• Denitrification

• Respiration

During industrial nitrogen fixation, what does nitrogen gas react with to form ammonia?

• Oxygen gas

• Carbon dioxide

• Hydrogen gas

• Methane

When does nitrogen loss occur in the nutrient cycle?

• When nitrogen gas is released into the atmosphere

• When plants are harvested

• During nitrogen fixation

• When bacteria consume nitrogen

What does the term "sorption" describe in the context of nutrient mobility?

• The process by which plants release nutrients into the soil

• The absorption of ions to soil particles and absorption of nutrient ions into a plant

• The movement of nutrients from the soil to the atmosphere

• The conversion of nutrients into a form that plants cannot use