(i) Parthenogenesis is induced by electric shock to the unfertilized egg. The egg develops into an embryo. A new plant develops from the embryo.
(ii) Unfertilized ovum at 300 cm. After temperature 00-100 C. Transferred to temperature. Parthenogenesis of unfertilized eggs occurs when the temperature changes drastically. The ovum gives rise to the embryo and the embryo gives rise to a new plant.
(iii) Parthenogenesis occurs when the unfertilized ovum is pierced with a needle.
(iv) Parthenogenesis of unfertilized eggs is induced by application of UV light.