Question

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

• A. Ovules develop into embryo sac
• B. Ovary develops into fruit
• C. Zygote develops into embryo
• D. Central cell develops into endosperm

Answer 1

The correct option is A Ovules develop into embryo sac

Sexual reproduction in flowering plants includes pre-fertilisation events, fertilisation and post-fertilisation events.

The pre-fertilisation events include gametogenesis and gamete
transfer.

After the gametes are brought together, double fertilisation occurs in the embryo sac of the ovule. This leads to the formation of zygote and PEN.

The post-fertilisation events include

• development of embryo from zygote (embryogeny)
• formation of endosperm from PEN in the central cell of the embryo sac
• ovules develop into seeds
• ovary develops into fruit

Therefore, option a is incorrect as the ovules develop into seeds after fertilisation and the embryo sac is formed before fertilisation from the nucellus.