pollen grain containing tube cell + 2 internal sperm cells Germination/Fertilization process slide 11 o Pollen germinates on stigma o Pollen tube grows down style, callose plugs seal tube behind pollen, pollen tube nucleus ahead of sperm cells Double Fertilization o 2 sperm cells in Male Gametophyte o Egg cell and Central cell in Female Gametophyte o One sperm cell fertilizes egg cell ?
(grain; containing; tube cell + 2 internal sperm cells Germination/Fertilization process slide 11 o Pollen germinates on stigma o Pollen tube grows down style, callose plugs seal tube behind pollen, pollen tube nucleus ahead of sperm cells Double Fertilization o 2 sperm cells in Male Gametophyte) (One sperm cell; fertilizes; egg cell) (callose plugs; seal; tube) Context(callose plugs seal,List([164, 182))):(Pollen tube; grows down; ) Context(Pollen tube grows down callose plugs seal,List([134, 182))):(Pollen; germinates; on stigma)
callose plugs seal,List([164, 182)) Pollen tube grows down callose plugs seal,List([134, 182))
grain One sperm cell callose plugs Pollen tube Pollen
containing fertilizes seal grows down germinates
tube cell + 2 internal sperm cells Germination/Fertilization process slide 11 o Pollen germinates on stigma o Pollen tube grows down style, callose plugs seal tube behind pollen, pollen tube nucleus ahead of sperm cells Double Fertilization o 2 sperm cells in Male Gametophyte
egg cell
tube
on stigma