Ploidy Levels in Plant Life Cycles — NEET Biology

Which of the following statements correctly explain the reproductive features differentiating gymnosperms and angiosperms, particularly concerning fruit formation? S1: In gymnosperms, fertilisation is not followed by fruit formation primarily because their ovules are naked and not enclosed within an ovary wall. S2: The seeds of gymnosperms are described as 'naked' because they remain exposed on the megasporophylls, without any covering after fertilisation. S3: Angiosperms are characterised by the presence of flowers, where ovules are enclosed within the ovary, which eventually matures into the fruit after fertilisation. S4: The absence of a triploid endosperm and the presence of archegonia in gymnosperms are the main reasons for the lack of fruit formation. S5: Double fertilisation, a process that ensures the formation of both a diploid zygote and a triploid primary endosperm nucleus, is common to both gymnosperms and angiosperms.