After pollination occurs in a flower, what series of changes eventually leads to the formation of a seed and…

Question

After pollination occurs in a flower, what series of changes eventually leads to the formation of a seed and a fruit? Describe the steps in order.

Accepted Answer

## Model Answer After pollination, the pollen grain lands on the stigma and a pollen tube grows through the style to reach the ovary. Here, the male germ-cell fuses with the egg cell in the ovule — this is **fertilisation**, forming a **zygote**. The zygote divides repeatedly to form an **embryo** inside the ovule. The ovule develops a tough coat and becomes the **seed**. Simultaneously, the ovary grows and ripens to form the **fruit**. The petals, sepals, stamens, style, and stigma shrivel and fall off. *Source: Chapter 7, Section 7.3.2 — Sexual Reproduction in Flowering Plants* --- ## Explanation Examiners look for the correct **sequence**: pollination → pollen tube growth → fertilisation → zygote → embryo (inside ovule) → seed (ovule with tough coat) → fruit (ripened ovary). Three marks typically map to three key stages, so naming and briefly describing each step (pollen tube, fertilisation, seed/fruit formation) earns full marks. Avoid vague language — use terms like *zygote*, *em…

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