Biology 1.5 Minerals

What minerals do plants require for growth?

Nitrogen. Potassium. Phosphorus.

In what form is nitrogen taken in by plants?

As nitrates.

Why do plants require nitrogen?

Used to produce amino acids, which join to form proteins.

What are the symptoms of nitrogen-deficiency in plants?

Poor growth. Yellow leaves.

Why do plants require potassium?

Activates enzymes involved in photosynthesis and respiration.

What are the symptoms of potassium-deficiency in plants?

Yellow leaves. Poor flower growth. Poor fruit growth.

In what form is phosphorus taken in by plants?

As phosphates.

Why do plants require phosphorus?

Used to form DNA and cell membranes.

What are the symptoms of phosphorus-deficiency in plants?

Poor root growth. Discoloured leaves.

How can farmers artificially increase the concentration of minerals in the soil?

Using NPK fertilisers.

What are NPK fertilisers?

A type of fertiliser that contains nitrogen (N), phosphorus (P), and potassium (K).