Question : (a) Why is fertilisation in an angiosperm referred to as double fertilisation? Menyion the ploidy of the cell involved. (b) Draw a neat labelled sketch of L.S. or an ondhapermous monoéot seed.

Question : (a) Why is fertilisation in an angiosperm referred to as do

1.	Question : (a) Why is fertilisation in an angiosperm referred to as double fertilisation? Menyion the ploidy of the cell involved. (b) Draw a neat labelled sketch of L.S. or an ondhapermous monoéot seed.
Answer» Solution :(a) The fertilisation m an angiosperm is called double fertilisation because fertilisammof haploid egg cell by one haploid male GAMETE to form diploid zygote leads to syngamy. Fertilisation of two (diploid) POLAR nuclei by the other haploid male gamete to form TRIPLOID primary endosperm nucleus leads to triple FUSION.