The end products of sexual reproduction in angiosperms are:

The correct answer is Option (3) → Fruits and seeds

Sexual reproduction in a flowering plant starts with the flower and ends with the seed and the fruit that carries it.

(1) Microspores and megaspores — Incorrect. These are formed at the start, inside the anther and the ovule. They give rise to the pollen grain and the embryo sac.

(2) Buds and flowers — Incorrect. The flower is the site of sexual reproduction, not its product.

(3) Fruits and seeds — Correct. After fertilisation, the ovule becomes the seed and the ovary becomes the fruit. These are the end products.

(4) Ovary and ovule — Incorrect. These are the female parts that change into the fruit and the seed.

NCERT Extract:
Apomixis and Polyembryony – “… All flowering plants show sexual reproduction. A look at the diversity of structures of the inflorescences, flowers and floral parts, shows an amazing range of adaptations to ensure formation of the end products of sexual reproduction, the fruits and seeds.”