Question

Which one of the following statements regarding post-fertilisation development in flowering plants is incorrect?

• A. Ovary develops into a fruit
• B. Ovules develop into an embryo sac
• C. Zygote develops into an embryo
• D. PEC forms the endosperm

Answer 1

The correct option is B Ovules develop into an embryo sac

Events that occur after fertilisation are called post-fertilisation events.

After fertilisation:

1. Zygote develops into an embryo.

2. Primary endosperm cell (PEC) divides repeatedly to form the triploid nutritive tissue, endosperm.

3. Ovary develops into fruit.

4. Ovule develops into seed.

Hence option b is incorrect. The embryo sac (female gametophyte) is formed before fertilisation.