Compléter Plant reproduction Version en ligne Fill in the blanks plant reproduction activity par LATAM Global School 1 grain tube pollen ovule fertilisation stigma ovary ovule nucleus 1 . As the pollen sits on the , a pollen grows out of the pollen through the stigma and style and down into the . 2 . The of the cell travels down the tube into the ovary . 3 . The nucleus of the pollen cell meets the nucleus of the . This is when occurs . 4 . This fertilised will eventually develop into a new plant .