alternation of generations

About microscopic forms of life, including Bacteria, Archea, protozoans, algae and fungi. Topics relating to viruses, viroids and prions also belong here.

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bionut720
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alternation of generations

Post by bionut720 » Thu May 03, 2007 3:34 am

What is the general pattern of alteration of generations for algae and plants?

Darby
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Post by Darby » Thu May 03, 2007 8:11 pm

I wasn't aware that algae did it, and only some plants really do it.

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kotoreru
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Post by kotoreru » Fri May 04, 2007 1:16 pm

Mmmm...like Ferns, for example.

daniel.kurz
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Post by daniel.kurz » Sun May 06, 2007 3:00 am

Wrong forum. Try the botany forum. But this is how it generally works. In the Bryophtyes (Mosses) the gametophyte generation is dominant and the sporophyte generation grows out of the top. In the rest the Pterophytes (ferns), gynmosperms (conifers), and angioperms (flowering plants) the sporophyte is dominant and then the gametophyte stage. Thats for plants.

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Post by Darby » Sun May 06, 2007 3:13 am

The problem is that for the higher plants, the sporophyte stage ceases to be an asexuallly reproducing stage (for the most part). So alternation of generations as a group characteristic isn't present.

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