A. A diploid sperm from pollen enters the female gametophyte and fuses with a diploid egg.
D. A haploid pollen grain produced by the male sporophyte enters the female sporophyte and fuses with a haploid megasporangium.
A. The sporophyte generation is much larger than the gametophyte generation and the two generations grow as independent structures.
D) A haploid sperm from pollen enters the female gametophyte and fuses with a haploid egg.
D) Lycophytes are current examples of plants in which microphylls have been lost.
A) The sporophyte generation is much larger than the gametophyte generation and the two generations grow as independent structures.
A) A haploid pollen grain produced by the male sporophyte enters the female sporophyte and fuses with a haploid megasporangium.
E) extends from the spore, through the adult multicellular haploid plant, to the gamete.
D) The evolution of porous cuticle and protective layers for the gametangia contributed to making the first vascular plants successful.
A) There is an incomplete fossil record for vascular plants.