Alternation of generation

[sagda]

Do flowering plants reproduce by "Alternation of generation"? If so, How?

[MrMistery]

do you know what alternation of generations means?

[plasmodesmata11]

Yes, angiosperms go through the alternation of generations. The primary stage is the sporophyte with an incredibly small, nutritionally dependent gametophyte stage that is located in the flower. Check out this link for a full diagram and explanation: http://ecology.botany.ufl.edu/ecologyf03/apomixis.html

[sagda]

Yes, angiosperms go through the alternation of generations. The primary stage is the sporophyte with an incredibly small, nutritionally dependent gametophyte stage that is located in the flower. Check out this link for a full diagram and explanation: http://ecology.botany.ufl.edu/ecologyf03/apomixis.html

Thank you very much, this link is very useful to me.

[sagda]

do you know what alternation of generations means?

Yes, I do. I was just confused...

[asker94]

alternation of generation is only in pteridophytes(seedless).Spermatophytes(gymnosperms and angiosperms) don't exibit alternation of generation

[MrMistery]

alternation of generations is a stupid term anyway, because they are the same generation. and it does exist everywhere, it's just that in spermatophytes the haploid part of the life cycle is reduced to only a few cells.

[kika]

For sexually reproducing multicellular organisms such as plants and animals, the life cycle requires that diploid cells divide by meiosis to create haploid cells. Haploid cells then fuse to recreate the diploid number and a new organism. Alternation of generations refers to the occurrence in the plant life cycle of both a multicellular diploid organism and a multicellular haploid organism, each giving rise to the other. This is in contrast to animals, in which the only multicellular phase is the diploid organism (such as the human man or woman), whereas the haploid phase is a single egg or sperm cell.
read more: http://www.biologyreference.com/A-Ar/Al ... tions.html

[JackBean]

Alternation of generations refers to the occurrence in the plant life cycle of both a multicellular diploid organism and a multicellular haploid organism, each giving rise to the other.

Really? And I thought that in higher plants, the haploid part is only the reproductive part of plant