how flowering plants reproduce ?

Question

how flowering plants reproduce .explain please.how flowering plants reproduce .thank ya

Answer 1

Pollen Development:

A pollen grain is an immature male gametophyte.
It is produced within the sporangium of the anthers.
The diploid microspore mother cell will undergo meiosis and form 4 haploid microspores.
The microspores nuclei will undergo mitosis and produce a tube nucleus and a generative nucleus.
A thick wall forms around the spore in a specific pattern, producing the pollen grain or immature male gametophyte.
Ovule Development:

The ovule is an immature seed. It is formed within the ovary and contains the female gametophyte.
The female gametophyte is the embryo sac and forms in the following way.
The megaspore mother cell undergoes meiosis to form 4 haploid (N) megaspores.
One of the 4 will continue to develop, while the other 3 dissolve.
The remaining megaspore grows and its nucleus will undergo 3 mitotic divisions, forming 1 large cell with 8 haploid nuclei.
This will develop into the embryo sac. This sac contains a specific arrangement of these nuclei in the following order: The egg cell is located near the micropyle surrounded by 2 other cells called synergids. At the opposite end 3 antipodal cells are found. In the center of the sac will be found 2 polar nuclei.
Pollination:

Pollination is the placement of the pollen on the stigma of the carpal. This pollen transfer can be accomplished by wind, insects, built in mechanical discharge, and man. Once the pollen lands on the stigma, a series of chemical reactions takes place allowing the pollen grain to begin producing a structure called the pollen tube. As this is happening, the generative nucleus will divide and produce 2 sperm nuclei. This pollen grain with the pollen tube and 3 nuclei is considered the mature gametophyte. The pollen tube will work its way through the style of the carpal and touch the micropyle of the ovule. Here the sperm nuclei will enter the embryo sac and fertilize the egg and the two polar nuclei; hence the term double fertilization. The fertilized egg (2N) will develop into the immature seed plant, while the (3N) central cell will develop into the endosperm or food storage area of the seed.

Answer 2

Without going into too many details, these are the main steps:
1. The flower produces pollen in the anther which is the top part of the stamen.
2. The female part of the flower is the pistil which has a stigma, style, and ovary. The ovary contains the ovule(s) which will become the seed or seeds.
3. During pollination the pollen is transferred from the anther to the stigma, either in the same plant or in a different plant, depending on the usual method for that particular species.
4. Each pollen grain grows a pollen tube down through the style to an ovule inside the ovary. The pollen tube growth is directed by the tube nucleus.
5. The pollen tube delivers two sperm nuclei to the ovule. One sperm nucleus joins with the egg nucleus to make the zygote. The zygote becomes the embryo in the seed. The other sperm nucleus joins with the two polar nuclei to make the endosperm nucleus. This nucleus forms the food storing part of a seed. Because there are two sperm nuclei, this process is called double fertilization.
6. The ovule becomes a seed. The ovary thickens and enlarges to form a fruit.

Answer 3

i think it goes something like this the plant produces a flower - a bug, insect wasp, bee etc comes along and gets the pollen and spreds it around to the other flowers which makes the seeds fertile then the flower dyes the seeds develop and drop to the ground or get carried by birds or wind to other locations and then they grow again. Some plants flower but reproduce young plants through tubers, bulbs and self division.