In which part of the flower are seeds formed?

The flower is the sexual reproductive part of an angiosperm. It consists of four whorls of modified leaves : sepals, petals, stamens and carpals. The stamens are the male reproductive parts which includes the sporangia that produces pollen. The carpals are the female reproductive parts and includes the sporangia that produces the egg.





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.

In which part of the flower are seeds formed?
ovary
Reply:In the gynaeceum, the bottle shaped structure in the inner base of flowers, it contains the ovules and it has a stigma, tube like structure where polen grains land and develop the male nucleus that disolve stigma structure in a rece to reach ovules, just like in mammals sperm seeks ovules. First to reach an ovule, gets to form a new seed.
Reply:i don't think flowers have seeds...
Reply:Seeds are formed from the fertilized ovules in the ovary of the flower. But note that in a very small number of species seeds can form apomictically without fertilization ... Taraxacum is a well-known example.
Reply:In the ovaries,
Reply:does hipshod420 think flowers are born live? Has this person never planted a garden? Get out of your concrete jungle and see nature. I am more disgusted by todays education system every day on Yahoo Answers