Which characteristic do gnetophytes and cycads have in common? are all deciduous may grow in tropical climates grow as vines are mostly low-lying shrubs

Answer AND Explanation:

Gnetophytes are gymnosperms , they are woody  and the embryo has two cotyledons . Cycads are woody plants that produce seeds found in Subtropical and warm temperate regions and also they produce motile sperm cells.

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.

meiosis is the first to occur after the nuclei of opposite of opposite mating types fuse