- What happens during Megasporogenesis?
- What is the result of triple fusion?
- Why does triple fusion take place in flowering plants?
- What do u mean by triple fusion?
- How does triple fusion occur?
- How many gametes are involved in triple fusion?
- What is the biological term for the product of fusion?
- Is formed by triple fusion?
- What is triple fusion write the significance of it?
- What is Syngamy and triple fusion?
- How can we prevent self pollination in plants?
- What is polar nucleus?
What happens during Megasporogenesis?
Megasporogenesis refers to the development of megaspores from the megasporocyte, the cell that undergoes meiosis.
Meiosis of the megasporocyte nucleus results in the formation of four haploid megaspore nuclei.
In most taxa, meiosis is followed by cytokinesis, resulting in four megaspore cells..
What is the result of triple fusion?
Triple Fusion: Triple fusion forms the endosperm. Double Fertilization: Double fertilization produces a diploid zygote as well as the triploid endosperm. Triple Fusion: Triple fusion produces the triploid endosperm.
Why does triple fusion take place in flowering plants?
Answer:triple fusion takes place in the embryo sac. The vegetative cell of the matured male gamete fuses with the polar nuclei and hence it is refered as triple fusion. This results in formation of PEN i.e primary endosperm nucleus whose ploidy is 3n.
What do u mean by triple fusion?
: the fusion involving two polar nuclei and a sperm nucleus that occurs in double fertilization in a seed plant and results in the formation of the endosperm.
How does triple fusion occur?
Triple fusion is the fusion of the male gamete with two polar nuclei inside the embryo sac of the angiosperm. This process of fusion takes place inside the embryo sac. When pollen grains fall on the stigma, they germinate and give rise to the pollen tube that passes through the style and enters into the ovule.
How many gametes are involved in triple fusion?
In angiosperms one male gamete fuses with the two polar nuclei to form triploid primary endosperm nucleus. The process is called triple fusion. These two acts together are known as double fertilization.
What is the biological term for the product of fusion?
Synkaryon became the name of this type of cell combined with a nucleus. In the late 1960s biologists successfully fused cells of different types and from different species. The hybrid products of these fusions, heterokaryon, were hybrids that maintained two or more separate nuclei.
Is formed by triple fusion?
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 end result, outcome of the process of triple fusion is the formation of the endosperm.
What is triple fusion write the significance of it?
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. This is because it provides the embryo with all the nutrition that it needs during the early days of its growth.
What is Syngamy and triple fusion?
Triple fusion Definition. The fusion of male and female gametes during the fertilization is known as syngamy. The fusion of the sperm cell with the two polar nuclei during the double fertilization is known as triple fusion.
How can we prevent self pollination in plants?
(a) Strategies adopted by flowering plants to prevent self-pollination:Herkogamy: Flowers possess some mechanical barrier on their stigmatic surface to avoid self-pollination.Dichogamy: Pollen and stigma of the flower mature at different times to avoid self-pollination.More items…•
What is polar nucleus?
Definition. Two nuclei that migrate to the center of the embryo sac and fuse with a male nucleus (sperm) to form the primary endosperm nucleus which divides and sometimes forms the endosperm.