Fertilization happens when a male sex cell 1___with the female sex cell. This happens when a 2. ___ grows out of the pollen grain. This tube is called pollen tube. It grows towards the 3___ sex cell. A male sex cell moves the tube. The tube 5_ the female sex cell. The tip of the tube bursts open. The 6. ___ sex. cell joins with the female sex cell. The ovule then becomes 7__ und it becomes a seed. The ovary grows in size as the 8_ inside it grows As "As the ovary enlarges and ripens, it becomes a 9__ as this process occurs, the 10.__of the flower wither and die. The ripened ovary is a fruit.
