Which event is termed as double fertilization?
In angiosperms, one of the male gametes fuses with the egg cell to form a zygote (syngamy). The other male gamete fuses with the diploid secondary nucleus to produce the triploid primary endosperm nucleus (PEN). Because of the involvement of two fusions, this event is termed as double fertilisation.
Which are the events in double fertilization?
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
What occurs during double fertilization in plants?
During the double fertilization process in angiosperms, one of the two male gametes carried by the pollen tube fuses with the egg cell nucleus to form the diploid zygote, and the other with the diploid central cell nucleus to form the endosperm.
What is double fertilization example?
Double fertilization is a complex fertilization mechanism of flowering plants (angiosperms). This process involves the joining of a female gametophyte (megagametophyte, also called the embryo sac) with two male gametes (sperm).
What is double fertilization and diagram?
The process in which fusion of male gamete with eggs and another male gamete with the nucleus takes place in an embryo sac is termed as double fertilization. In the flowering plants after entering one of the synergids the Pollen tube releases the two male gametes into the cytoplasm of synergids.
Why fertilization is called double fertilization?
a) In double fertilization process, one of the two pollen nuclei fuses with egg and another with polar nuclei. Hence, there are two types of fusion, one is fertilization and another is triple fusion. Thus, fertilization in an angiosperm is called as double fertilization.
What is double fertilization Mcq?
Double fertilization is a characteristic feature of angiosperms. One of the male gametes fuses with the egg cell of embryosac forming a diploid zygote. This process is known as syngamy. The other male gamete fuses with two polar nuclei of central cell forming triploid endosperm. 1.
What is Mcq fertilization?
The process of uniting male and female gametes for the commencement of the development of a new offspring is known as fertilization.