Question

what is the ploidy of vegetative cell and generative cell during fertilisation of angiosperms​

Answer 1

Answer:

Our results indicate that the vegetative cell of C. velia is haploid, as each probe produced a single fluorescent signal, although the possibility of diploidy with somatic pairing of homologous chromosomes

The generative cell divides by mitosis to produce two haploid sperm cells. The pollen tube reaches the micropyle of the ovule and digests its way into one of the synergids, releasing the sperm cells. The synergid degenerates as one of the two sperm cells fertilizes the egg cell, producing a diploid (2n) zygote.