gametophyte การใช้

• The plant body of a hornwort is a haploid gametophyte stage.
• In plants, oogenesis occurs inside the female gametophyte via mitosis.
• The longer lived, more prominent autotrophic plant is the gametophyte.
• All species are dioicous, with separate male and female gametophytes.
• Gametophytes which produce egg and sperm on separate plants are termed Dioicous.
• However, not all heteromorphic gametophytes come from heterosporous plants.
• The gametophyte becomes a food storage tissue in the seed.
• The haploid spores germinate and grow into a haploid gametophyte.
• The nutrition of the gametophyte appears to be endophytic fungi.
• Since moss gametophytes are autotrophic they require enough sunlight to perform photosynthesis.
• The gametophyte cell closest to the dispersal of the seeds.
• Two or three archegonia containing an egg then develop inside the gametophyte.
• Liverworts, mosses and hornworts spend most of their lives as gametophytes.
• The male gametophyte consists of a few cells within a pollen grain.
• These spores represent the gametophyte phase of the life cycle.
• The endosperm is haploid, derived from the female gametophyte.
• The megaspore then undergoes megagametogenesis to give rise to the female gametophyte.
• The vittarioid ferns are primarily photosynthetic gametophytes that reproduce asexually.
• Juvenile giant kelp grow directly upon their parent female gametophyte.
• The gametophytes are brown to white, cylindric, and repeatedly branched.