Advertisements
Advertisements
प्रश्न
Explain double fertilization and its significance.
उत्तर
In angiosperms, during fertilization, one male gamete fuses with the egg cell and forms diploid zygote in a process called syngamy. The other male gamete fuses with the two polar nuclei to form a triploid nucleus called the primary endosperm nucleus. This process is called triple fusion. Since fertilization takes place twice here, so this process is called double fertilization.
Significance - Due to double fertilization, the triploid nucleus develops into endosperm which serves as nutrition for embryo.
APPEARS IN
संबंधित प्रश्न
Why do you think the zygote is dormant for sometime in a fertilised ovule?
What happens to the following after fertilization?
Calyx
What is the function of the pollen tube? Explain it with the help of a diagram.
What is ‘double fertilization’? Describe it with the help of a neat and well-labeled diagram. Give its importance.
Explain the pollination process in Salvia
Identify the function of filiform apparatus.
From the following identify the fate of the male gametes discharged in the synergid.
Through which route the pollen tube can enter the ovule?
Double fertilization was first discovered by Nawaschin (1898) in ______.
Identity the part of embryo sac which takes part in formation of primary endosperm nucleus during fertlisation
