Read the following statements regarding pollination and outbreeding devices: (I) In some species, pollen release and stigma receptivity are not synchronised to prevent autogamy. (II) Self-incompatibility is a genetic mechanism that prevents self-pollen from fertilising the ovules. (III) In papaya, male and female flowers are present on the same plant, preventing geitonogamy. (IV) Geitonogamy is functionally cross-pol

Step-by-step solution

Statement (I) is correct: Lack of synchronisation between pollen release and stigma receptivity is an outbreeding device that prevents autogamy. Statement (II) is correct: Self-incompatibility is a genetically mediated mechanism that prevents self-pollen from fertilising the ovules by inhibiting pollen germination or pollen tube growth in the pistil. Statement (III) is incorrect: Papaya is a dioecious plant, meaning male and female flowers are present on different plants. This condition prevents both autogamy and g