The labels are as follows:

• Pollen tubes
• Pollen grains (N) (male gametophyte)
• Anther (2N)
• Haploid cell (N)
• Embryo sac (N) (female gametophyte)
• Egg cell
• Sperm
• Pollen tube
• Polar nuclei
• Endosperm nucleus (3N)
• Zygote(2N)
• Embryo (2N)
• Seed
• Endosperm
• Seed coat
• Seedling (2N) (new sporophyte)
• Mature sporophyte
• Ovary
• Ovule (2N)
• Style
• Stigma