- What is the function of endosperm?
- What happens during Megasporogenesis?
- What is triple fusion in higher plants?
- What is triple fusion class 10th?
- Why does triple fusion take place in flowering plants?
- What is Syngamy and triple fusion?
- What is double fertilization and triple fusion class 10?
- What is triple fusion write the significance of it?
- What develops after triple Fusion?
- What is the product of Triple Fusion?
- How many gametes are involved in triple fusion?
- Who discovered triple fusion?
- What is triple fusion name the nuclei involved in it?
- What is the result of triple fusion?
- How does triple fusion occur?
- How can we prevent self pollination in plants?
- Which type of pollination ensures the arrival of genetically different pollen grains stigma?
- What does Syngamy mean?
- What is double fertilization 10th?
- What is the product of Syngamy?
- What is polar nucleus?
What is the function of endosperm?
The endosperm plays an important role in supporting embryonic growth by supplying nutrients, protecting the embryo and controlling embryo growth by acting as a mechanical barrier during seed development and germination..
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 triple fusion in higher plants?
: 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.
What is triple fusion class 10th?
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.
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 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.
What is double fertilization and triple fusion class 10?
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 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 develops after triple Fusion?
PEC and develops into embryo. The central cell after triple fusion becomes the PEC (primary endosperm cell). …
What is the product of Triple Fusion?
Triple fusion is the fusion of the male gamete with two polar nuclei inside the embryo sac of the angiosperm. This process involves the fusion of three haploid nuclei, hence it is known as triple fusion. It results in the formation of the endosperm.
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.
Who discovered triple fusion?
Double fertilization was discovered more than a century ago by Sergei Nawaschin and Grignard in Kiev, Russian Empire, and Léon Guignard in France. Each made the discovery independently of the other.
What is triple fusion name the nuclei involved in it?
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 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.
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 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…•
Which type of pollination ensures the arrival of genetically different pollen grains stigma?
XenogamyXenogamy (Greek xenos=stranger, gamos=marriage) is the transfer of pollen grains from the anther to the stigma of a different plant. This is the only type of cross pollination which during pollination brings genetically different types of pollen grains to the stigma.
What does Syngamy mean?
: sexual reproduction by union of gametes : fertilization.
What is double fertilization 10th?
Double fertilization : It occurs when one male nucleus fertilizes (fuses) with egg cell to form zygote cell and other male nucleus fuses (fertilizes) with two polar nuclei to cause triple fusion. … After fertilization: (i) Ovary develops into fruit. (ii) Ovules develop into seeds.
What is the product of Syngamy?
Syngamy (frequently labeled by “Y!”), is the fusion of two cells, resulting in a cell that has twice as many chromosomes. The two cells which are fused together are called gametes, and the resulting cell is a zygote.
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.