What is double fertilization and triple fertilization Class 12?
One male gamete fuses with the female gamete and the other fuses with the secondary nucleus. As two male gametes take part and fertilization and fertilization takes place twice, this process is called double fertilization. Since three gametes are involved it is called triple fusion.
What is triple fertilization Class 12?
Triple fusion is a fusion that involves a sperm nucleus and two polar nuclei which occurs in the double fertilization in a seed-bearing plant that results in the endosperm formation. The fusion process occurs in the embryo sac of the angiosperms.
What is double fertilization and triple fusion class 12?
One male gamete fuses with the female gamete and the other fuses with the secondary nucleus. As two male gametes take part and fertilization and fertilization takes place twice, this process is called double fertilization. Since three gametes are involved it is called triple fusion.
What do you mean by triple fusion for class 12 biology?
The fusion of three haploid nuclei during the fertilization in the embryo sac is known as triple fusion. The fusion of the second male gamete with the two centrally located polar nuclei produces a triploid primary endosperm nucleus (PEN).
What is triple fusion where and how does it take place Class 12?
Fusion of male gamete with diploid secondary nucleus/central cell to form triploid primary endosperm nucleus is called as triple fusion as it involves three nuceli. It takes place in embryo sac during double fertilization. Two polar nuclei and male gamete are involved in it.
What is difference between single and double fertilization?
Of the two sperm cells, one sperm fertilizes the egg cell, forming a diploid zygote; the other sperm fuses with the two polar nuclei, forming a triploid cell that develops into the endosperm. Together, these two fertilization events in angiosperms are known as double fertilization.Jun 8, 2022
What is single fertilization and double fertilization?
The process of fusion of male gamete with the female gamete to form the diploid zygote (2n) is known as fertilisation. The fusion of one male gamete with egg and that of another male gamete with a secondary nucleus is called double fertilisation.
What is single fertilization?
Synonyms: zygote biosynthesis | zygote formation. Definition: The union of male and female gametes to form a zygote.
What is difference between post fertilization and double fertilization?
Key Points. Double fertilization involves two sperm cells; one fertilizes the egg cell to form the zygote, while the other fuses with the two polar nuclei that form the endosperm. After fertilization, the fertilized ovule forms the seed while the tissues of the ovary become the fruit.Jun 8, 2022