Plant Nutrients Review

What is the role of nitrogen in plant growth?

• Increases disease resistance

• Promotes rapid growth and increases leaf size

• Facilitates cell division and growth

• Activates enzymes to metabolize carbohydrates

Which of the following is NOT a primary nutrient?

• Nitrogen (N)

• Potassium (K)

• Calcium (Ca)

• Phosphorus (P)

What does the 'law of the minimum' state?

• Plants use essential elements in proportion to their availability

• Plants require a minimum amount of nutrients to survive

• The element in shortest supply will limit plant growth

• Plants grow to the maximum height possible

Which nutrient is essential for the synthesis of amino acids required to manufacture proteins?

• Boron

• Potassium

• Sulfur

• Magnesium

What is the main source for supplementing the soil with calcium and magnesium?

• Boric acid

• Potassium nitrate

• Dolomitic lime (aglime)

• Mono-ammonium phosphate

Which of the following is a symptom of nitrogen deficiency in plants?

• Interveinal chlorosis of leaves

• Leaves turning reddish-brown and appearing scorched

• Slow stunted growth and pale green foliage

• Yellow stripes parallel to the leaf blade

How many nutrient elements are required to grow crops?

• 16

• 13

• 20

• 10

Which nutrient increases the oil content of oil crops?

• Sulfur

• Nitrogen

• Phosphorus

• Potassium

What is the role of copper in plant growth?

• It is essential for photosynthesis

• It activates enzymes for amino acid production

• It increases disease resistance

• It is involved in chlorophyll formation

How many essential nutrients are there for plants?

• 6

• 16

• 7

• 17