The correct option is: (c) 2 only
Explanation:
Anthesisisthe phenomenon of opening of flower buds to become flowers. Fruits which are developed without fertilization are called parthenocarpic fruits. It does not have seeds. The plants undergo double fertilization as the egg fuses with the male gamete and the two polar bodies also get fused with another male gamete. The fertilized egg develops into the diploid embryo while the double fertilized polar bodies become the triploid endosperm.
