Thursday, April 21, 2011

Blog #11

Blog #11:
Get a picture of alternation of generations. Put it in your blog and explain how it relates to plants.





          "Plant life cycles have two phases known as the alternation of generations. The sporophyte phase is "diploid" in the picture, and is part of the life cycle in which meiosis occurs. The gametophyte phase is "haploid", and is the part of the life cycle in which gametes are produced. In flowering plants the multicelled visible plant such as a plant leaf is sporophyte, while pollen and ovaries contain the male and female gametophytes. Plant life cycles differ from animal ones by adding a phase, the haploid gametophyte, after meiosis and before the production of gametes.
          Alternation of generations is normally used to describe the life cycles of plants. Organisms such as fungi can have life cycles in which different kinds of organism alternate. The term 'alternation of generations' has been applied to these cases."


No comments:

Post a Comment