HORTICULTURE

Detailed explanation-1: -A mature embryo sac consists of two synergids, one egg cell and three antipodal cells with one nucleus each. Then there is one large central cell that has two nuclei. Hence, a mature embryo sac consists of 7 cells and 8 nuclei.

Detailed explanation-2: -In majority of angiosperm plants, both male and female gametes are produced after meiosis following a series of divisions of haploid spores (Figure 1). In the female ovule, among four meiotic products only one megaspore cell survives and undergoes three syncytial divisions producing the embryo sac with eight nuclei.

Detailed explanation-3: -Final answer: A typical angiosperm embryo sac at maturity is 8-nucleate and 7-celled.

Detailed explanation-4: -Embryo sac in angiosperms is seven celled and eight nucleated structure. This includes three antipodals, two synergids, one egg and a large central cell. The large central cell has two nuclei (diploid secondary nucleus). Rest of the cells have one nucleus each.

Detailed explanation-5: -One of the many mysteries surrounding the origin of the angiosperms is the evolutionary origin of the Polygonum-type embryo sac (monosporic, eight-nucleate and seven-celled) that occurs in the majority of flowering plants.