Question

The fertilization of the central nucleus in a flowering plant produces a ____.

Answer 1

a. triploid nucleus
b. zygote
c. diploid nucleus
d. haploid egg

Answer 2

You copied this question from this link: http://answers.yahoo.com/question/index?qid=20110527091125AAuaOvr. And the answer provided was: a. triploid nucleus - forms the endosperm. Always make reference to any site used.

Answer 3

After the petals attract the pollinators to the anthers, birds or insects will sip the nectar and they will then brush there bodies against the anthers, causing the pollen to stick to their bodies. They will then carry the pollen to another flower (this will result in pollination).

Now when the pollen (1n) grain, that will contain (**"two haploid nuclei"**) that will reach the pistil and it will stick to the stigma. A pollen tube grows through the pistil and into the ovary, and then into the ovules (1n).

Next, the male gametes (these are two haploid sperm) will join the female gametes with the ovules, creating double fertilization. One sperm must fertilize the main egg and the other sperm joins the polar nuclei, and then inside the embryo sac, to make the endosperm tissue that will provide energy for the embryo's development.

Now double fertilization will create a (diploid zygote or a seed (2n)). You will start to see that the embryo of the seed is the sporophyte generation. Through its development, the ovary around it will become larger and it will then form a fruit.

Hope that helps! n_n