Is his role in... 1- Growth and development of embryos. 2- A role in cell division. 3- For its role in cell elongation. 4- Because of its importance in all of the above.
Auxin plays a crucial role in the growth and development of fruits through several mechanisms. Here's how it contributes in each aspect:
1. **Growth and Development of Embryos**: Auxin is vital for the early stages of fruit formation, as it helps initiate the growth of the fruit from the ovary following fertilization. It regulates the development of the embryo by influencing cell differentiation and tissue formation.
2. **Role in Cell Division**: Auxin promotes cell division, which is essential for the overall growth of fruit tissues. It works synergistically with other hormones like cytokinins to stimulate mitotic activity, especially during the early stages of fruit development.
3. **Role in Cell Elongation**: Auxin's most well-known function is its ability to promote cell elongation. In fruits, this allows cells to expand, contributing to the growth in size of the developing fruit.
4. **Importance in All of the Above**: Auxin's role is integral to all these processes—embryo development, cell division, and cell elongation—making it indispensable for the growth and development of fruits. It orchestrates a balance of these processes to ensure proper fruit formation and maturation.