The number of male gametes and the number of meiotic divisions required for the formation of 100 seeds in a typical angiosperm is

Question

The number of male gametes and the number of meiotic divisions required for the formation of 100 seeds in a typical angiosperm is (A) 100 male gametes and 125 meiotic divisions (B) 200 male gametes and 125 meiotic divisions (C) 100 male gametes and 25 meiotic divisions (D) 200 male gametes and 25 meiotic divisions

Tardigrade Admin · Accepted Answer

Angiosperms undergo double fertilization in which one male gamete fuses with the egg, whereas the second male gamete fuses with the secondary nucleus. Thus, for the formation of one seed, two male gametes are required. One egg is produced by one meiotic division. Four pollen grains are produced by one meiotic division. Thus, for 100 seeds, 100+25 = 125 meiosis are required with 200 male gametes [x+(x/4), 100+(100/4)=100+25=125].

Q. The number of male gametes and the number of meiotic divisions required for the formation of 100 seeds in a typical angiosperm is

100 male gametes and 125 meiotic divisions

200 male gametes and 125 meiotic divisions

100 male gametes and 25 meiotic divisions

200 male gametes and 25 meiotic divisions