Which process involves the active mitosis of germinating or sprouting plants?

The active mitosis of germinating or sprouting plants is a fundamental part of the process of plant growth. During this stage, cells are dividing and multiplying rapidly to facilitate the development of new tissues and structures necessary for the plant to establish itself and thrive. Mitosis, which is the process where a single cell divides into two identical daughter cells, is crucial for the growth of the plant as it allows for the expansion of roots, stems, and leaves, thereby enabling the plant to adapt and respond to its environment.

While meiosis, cell differentiation, and photosynthesis each play important roles in plant biology, they do not directly involve the active process of cell division happening in a germinating plant. Meiosis is related to the production of gametes and sexual reproduction, cell differentiation refers to the process by which cells become specialized for particular functions, and photosynthesis is the process by which plants convert light energy into chemical energy. Therefore, in the context of active mitosis during the early growth phase of plants, the correct answer is indeed plant growth, as it encompasses the overall growth process initiated through cell division.