Because the triploid endosperm nucleus is formed at the same time as fertilization and then it develops.
Fertilization
For an endosperm to be formed one sperm nucleus has to fertilize the egg. The egg is fertilized to form a zygote while the other sperm nucleus fuses with the two polar nuclei at the center of the embryo sac to form the primary endosperm cell.
Fertilization normally occurs in the fallopian tube
fertilization takes in the fallopian tubes of female!
The menstrual cycle typically lasts 28 days - but everyone's cycle is different. If fertilization does take place then there is no menstrual cycle, this would continue into pregnancy.
Endosperm formation requires the investment of a lot of nutrients. If it took place earlier, and fertilization did not occur, those nutrients could be wasted.
What are the two distint fertilization that happen in endosperm
The fusion of a male gamete with secondary nucleus is called double fertilization and it results in the development of endosperm which nourishes the developing embryo inside the seed. Thus without double fertilization nourishment of developing embryo will be hamphered.
The kind of fertilization and development that takes place in aquatic animals is known as External fertilization.
Fertilization
Depending on the animal, fertilization of eggs can occur externally or internally. With internal fertilization...the sperm and egg generally combine in the fallopian tubes.
Fertilization
The seed is formed in the fruit from ovule. A fertilized ovule develops the embryo and endosperm. Most of the endosperm is used up by the developing embryo in dicot seeds. In monocot seeds large amount of endosperm is retained to support the germinating embryo. When someone plants a seed in the ground an entire plant grows from it over time.
No, it occurs in the fallopian tube (oviduct)
Fertilization takes place internally.
The two types of fertilization are 1. Internal fertilization 2. External fertilization Internal fertilization takes place within the body of the female. External fertilization takes place outside the body of female. It takes place by layong eggs.
for reptiles it is internal fertilization and they can't do external fertilization