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

After fertilisation, ovules develop into seeds but not embryo sac. Ovary develops as fruit. Zygote develops into embryo. Fertilised  central cell develops into endosperm. 

(2) Ovary, post fertilisation, develops into fruit.

(3) Post fertilisation, zygote undergoes embryogenesis and develops into embryo, which is stored inside the seed.

(4) After triple fusion, the central cell becomes the primary endosperm cell and develops into endosperm.