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Dictionary » A » Angiosperms Angiosperms'angiosperms'[media:Any [[member of the more than 250,000 Species of flowering plants (division magnoliophyta) having roots, stems, leaves, and well-developed conductive tissues (xylem and phloem). Angiosperms are often differentiated from gymnosperms by their production of seeds within a closed chamber (the ovary). Example: Aplle trees and all fruit trees. The ovary wall is actually the fruit. The magnoliophyta division is composed of two classes, the monocotyledons (liliopsida) and dicotyledons (magnoliopsida). ]]] ![]()
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Results from our forumRe: New perspectives in theory of evolution... Simple plants and phinophyta include above 150 thousands specieses, angiosperms above 250 t. specieses, fungi 1,5 mln, insects about 1 mln, primitive animals tens thousands, fishes 24,5 t., reptiles 13 t., birds 9350, ...
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Alternation of generationalternation of generation is only in pteridophytes(seedless).Spermatophytes(gymnosperms and angiosperms) don't exibit alternation of generation
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alternation of generations in mosses/ferns (haploid/diploid)... is the sporophyte. In higher plants (gimnosperms and above) the gametophyte is reduced to just a few cells inside the seed (in the male seed of angiosperms the prothallus is just one cell if i remember correctly). Does that help?
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Re: Alternation of generation 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 ...
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Re: Alternation of generationYes, 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 ...
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