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"Dragon tongue" mustard with four cotyledons (seed leaves)
Germinated outdoors so pardon the slug damage
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this post was submitted on 05 Apr 2024
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In angiosperms, double fertilization occurs. The pollen grain contains two sperm cells. In the female part of the flower, one gamete forms into an egg and two gametes fuse together to form a megagametophyte.
Both the egg and the megagametophyte are fertilized by the pollen grain. The fertilized egg forms the embryo. The fertilized megagametophyte forms the endosperm . It is the fusion of 3 seperate gametes (triploid).
The endosperm (nutrient storage structure) becomes the cotyledon.
Thank you. I used to know these things, but its been so long.