Yellowing of plant leaves from a lack of chlorophyll is called what?

The yellowing of plant leaves due to a lack of chlorophyll is known as chlorosis. This condition occurs when the production of chlorophyll is insufficient, leading to a decline in the green coloration of leaves. Chlorosis can be caused by a variety of factors, including nutrient deficiencies (most commonly nitrogen, iron, or magnesium), poor drainage, root damage, or diseases.

In this context, chlorosis indicates that the plant is struggling to perform photosynthesis effectively, which is essential for its overall health and growth. A plant exhibiting chlorosis may have reduced energy levels and may struggle to thrive, as chlorophyll is crucial for the absorption of sunlight during the photosynthesis process.

The other terms in the choices relate to different processes or conditions. Necrosis refers to the death of plant tissue and is distinct from chlorosis, which is characterized by the discoloration of healthy tissue rather than its death. Photosynthesis is the process by which plants convert light energy into chemical energy, utilizing chlorophyll, while fertilization refers to the process where pollen fertilizes ovules to produce seeds, unrelated to the yellowing of leaves.