Question

Write the post fertilisation changes that occur in a flower.

Answer 1

Step 1: Understanding Post-Fertilization Changes:
Following fertilization in a flower, modifications occur to facilitate seed and fruit development, which are vital for plant species propagation.

Step 2: Ovule Transformation:
- The fertilized ovule matures into a seed. The zygote within the ovule undergoes cell division to form the embryo.
- The ovule's outer integuments develop into the protective seed coat.

Step 3: Ovary Maturation:
- The flower's ovary enlarges and matures, developing into the fruit. The ovary wall differentiates into the pericarp (fruit wall).
- As the ovary ripens, it can alter in form, hue, and texture, becoming either a fleshy or dry fruit depending on the plant type.

Step 4: Other Floral Part Changes:
- Petals, stamens, and the style typically senesce and detach once reproductive functions are complete.
- The stigma may also desiccate and wither post-fertilization.

Step 5: Conclusion:
Post-fertilization, the ovule yields a seed, and the ovary becomes a fruit. These developments are crucial for the generation of new plants, ensuring species continuity.