Question

Fertilizers are often labeled with an N-P-K value, which shows how much nitrogen, phosphorus, and potassium the fertilizer contains. Nitrogen is found in DNA and in chlorophyll, the molecule that allows plants to photosynthesize. Phosphorus is found in DNA and it also makes up energy molecules. Potassium is needed in processes such as water regulation.

Based on this information, what impact does fertilizer have on a plant?
A.
It controls and regulates cellular processes, causing the plant to grow slower and smaller.
B.
It blocks the plants ability to photosynthesize, causing the plant to grow faster and larger.
C.
It alters the genes of the plant, causing the plant to grow slower and smaller.
D.
It accelerates DNA and cellular replication, causing the plant to grow faster and larger.

Answer 1

D. It accelerates DNA and cellular replication, causing the plant to grow faster and larger.

Explanation: Nitrogen and phosphorus are components of DNA and molecules needed for energy and photosynthesis, and potassium helps regulate water and other cellular functions — all of which support faster cell division and overall growth.