In which of the following infected plant cells die ?

The correct answer is Necrosis

Explanation:

• Necrosis refers to the death of cells or tissues in living organisms, often due to injury, infection, or other harmful conditions. In plants, necrosis is a common response to pathogenic infections, where the infected cells die to prevent the spread of the pathogen.
• Necrosis can result in visible symptoms like darkened, sunken, or dead areas on plant tissues such as leaves, stems, or fruits.
• Necrosis occurs when infected plant cells die as a result of damage caused by pathogens or adverse conditions.
• This is a defensive reaction to stop the spread of infection, as pathogens often rely on living cells to reproduce.
• Necrotic tissue is often characterized by discoloration, wilting, or drying out. For example, fungal infections like Botrytis cinerea cause necrotic lesions on plant leaves.

Incorrect Options:

• Hypertrophy: This refers to the enlargement of cells or tissues due to an increase in cell size. It does not involve cell death but rather the abnormal growth of cells. For example, certain pathogens can cause enlarged galls or tumors in plants.
• Hypoplasty or Atrophy: Hypoplasty (or atrophy) is the reduction in the size or number of cells, leading to decreased tissue or organ size.
• Hyperplasia: Hyperplasia involves the abnormal increase in the number of cells, leading to excessive tissue growth. This is often seen in the formation of plant galls or calluses.