Read the passage carefully and answer the questions based on the passage:

Pollen pistil interaction involves all events from the landing of pollen grains on the stigma until the pollen tube enters the embryo sac (when the pollen is compatible). When a pollen tube grows through the style and enters into the ovules, it finally discharges two male gametes in one of the synergids. Syngamy and triple fusion are two fusion events occur in angiosperms. Thus, angiosperms exhibit double fertilization. The products of these fusions are the diploid zygote and triploid primary endosperm nucleus. Zygote develops into embryo and primary endosperm cell forms the endosperm tissue. The developing embryo passes through different stages before maturation.

If there are 38 chromosomes in the zygote, how many chromosomes will be there in its haploid egg cell?

19

The correct answer is Option (3) -19

If there are 38 chromosomes in the zygote, the zygote is diploid (2n). Therefore, the haploid (n) number of chromosomes is half of that.

• Diploid (2n) = 38
• Haploid (n) = 38 ÷ 2 = 19

The haploid egg cell (female gamete) is produced by meiosis and contains half the number of chromosomes compared to the diploid zygote.