Definition: The term "actinomorphy" is a scientific term related to cell division in plants, specifically in Arabidopsis thaliana plant species. Actinomorphs are cells that have two types of chromosomes: one centromeric, which acts as the nucleus, and one telomeric, which serves as the nucleoplasma. They are not capable of normal growth or division. In Arabidopsis, the presence of both type 1 and type 2 chromosomes is characteristic for actinomorphs. This type of cell has been used to study cell division in plants and has implications for understanding how cells divide during embryonic development in plant embryos. Actinomorphs are also known as "metaphase I" cells, since they have a nucleus that acts as the central nucleus of the cell, which is essential for normal growth. They are commonly found in leaves, where they play a critical role in photosynthesis and leaf transport. Overall, actinomorphy has provided valuable insights into the structure and function of plants' cell division, contributing to our understanding of how cells divide during embryonic development and other biological processes in plant biology.
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