DENDROLOGY

Detailed explanation-1: -The sporophyte stage is the primary period of an angiosperm’s life cycle. Angiosperms are heterosporous. This means they produce bigger megaspores and smaller microspores. They produce microspores, which will deliver pollen grains as their male gametophytes.

Detailed explanation-2: -Two patterns of seed germination occur in angiosperms, depending on whether the cotyledons emerge from the seed: hypogeal (belowground germination) and epigeal (aboveground germination).

Detailed explanation-3: -Development of Embryo in Angiosperms After fertilization, the zygote divides into the upper terminal cell and lower basal cell. The basal cell develops into suspensor, which helps in the transport of nutrients to the growing embryo. The terminal cell develops into pro-embryo.

Detailed explanation-4: -Summary. In flowering plants, the gametophyte generation takes place in a flower, which forms on the mature sporophyte plant. Each male gametophyte is just a few cells inside a grain of pollen. Each female gametophyte produces an egg inside an ovule.