write the significance of porogamy,syngamy and triple fusion Biology question
Answers
programy:The definition of porogamy in the dictionary is the fertilization of a seed plant involving passage of the pollen tube into the ovule by the micropyle.
syngamy:Syngamy : This is important
to restore the diploid status in a sexually reproducing organism and formation of diploid zygote. Syngamy ensures continuity of species in sexually reproducing organism. Meiosis : It is important for producing haploid gametes in sexually reproducing organism.
triple fusion:The other one fuses with two polar nuclei (polar nuclei are located at the poles of the sac) and forms nutrient-rich endosperm. ... Triple fusion is significant in angiosperms because the result of this triple fusion, i.e. formation of the endosperm is very important for the developing embryo.
Answer:
Progamy: the pollentube after reaching ovary enters ovule through micro Pyle and then enters one of the synergid through filiform apparatus this is called as "progamy".
Syngamy :one of the male gametes moves toward the egg cell and nucleus of male cell fuses with egg cell nucleus this is called as "Syngamy".
Triple fusion:one male gamete moves towards the two polar nuclei located in the central cell and fuses with them to produce "primary endosperm nucleus(PEN)". As there is involvement of 3 haploid nuclei it is termed as "triple fusion"