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Unformatted text preview: P LANT K INGDOM Eukaryotic, multi-cellular, photosynthetic, autotrophs . Cell wall of cellulose (a very complex compound so that predators will find it harder to digest). 3 life cycles: Non-vascular, seedless, seeding . 1. Non-vascular life cycle (for e.g. Moss): >> Dont have vascular tissues ( Phloem, Xylem ) >> Moss all cells are very similar (very primitive plants) >> Moss can only grow in wet conditions. >> First plants didnt need roots because they were in wet conditions already. >> Only moss and ferns use sperms and eggs. Other plants, especially seeding plants use pollen . Life Cycle: Gametophytes make gametes that make a zygote, which becomes a sporophyte and produces spores, which grow into gametophytes. This keeps on recurring. The gametophytes are originally haploid cells, unlike in humans. 2. Seedless Plant Life Cycle (e.g. Fern): >> Similar to the other three cycles except the way it happens....
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This note was uploaded on 09/06/2011 for the course BIO 201 taught by Professor Mr.bajom during the Spring '09 term at Abu Dhabi University.
- Spring '09