Nine Treasures pollen falls on the stigma of peach. Why is the fruit peach-flavored?

(2) Pollen tube grows after falling on pistil stigma. When the pollen tube enters the ovule, it releases sperm, and the egg cell in the ovule combines with a sperm to form a fertilized egg, thus completing fertilization. After fertilization, the ovary wall develops into pericarp, the ovules inside develop into seeds, and the ovary develops into fruit.

(3) In Figure 3, 1 is the nucleus, which is the control center of cell life activities and contains major genetic materials; 2 is vacuole, which contains cell fluid and dissolves these substances; 3. Cytoplasm. The cytoplasm of living cells has fluidity, which is beneficial to the material exchange between cells and the external environment. 4 is chloroplast, which is the place of photosynthesis. Therefore, the genetic material that determines the sweetness and deliciousness of peaches is stored in vacuoles [2], as shown in Figure 3.

So the answer is: (1) pistil.

(2) ovule.

(3)2 vacuoles.