What does the male gametophyte in angiosperms produce?

The correct answer is Option (1) → Two sperms and a vegetative cell

The pollen grain is the male gametophyte of a flowering plant. When mature, it has two cells: a large vegetative cell and a small generative cell. The generative cell divides by mitosis to form two male gametes (sperms), either before the pollen is shed or later in the pollen tube.

Option (1) Two sperms and a vegetative cell — Correct. The generative cell gives two male gametes, and the vegetative cell stays as one cell. The two male gametes are needed for double fertilisation: one fuses with the egg and the other with the two polar nuclei.

Option (2) A single sperm and a vegetative cell — Incorrect. The generative cell always divides into two male gametes, not one. A single male gamete could not carry out both fusions of double fertilisation.

Option (3) A single sperm and two vegetative cells — Incorrect. A pollen grain has only one vegetative cell, and it forms two male gametes, not one.

Option (4) Three sperms — Incorrect. Only two male gametes are formed, from the generative cell. The vegetative cell does not divide to form male gametes.

NCERT Extract:
Stamen, Microsporangium and Pollen Grain – “… When the pollen grain is mature it contains two cells, the vegetative cell and generative cell (Figure 1.5b). The vegetative cell is bigger, has abundant food reserve and a large irregularly shaped nucleus.”
Pollination – “… You would recall that in some plants, pollen grains are shed at two-celled condition (a vegetative cell and a generative cell). In such plants, the generative cell divides and forms the two male gametes during the growth of pollen tube in the stigma. In plants which shed pollen in the three-celled condition, pollen tubes carry the two male gametes from the beginning.”