Exercise 4-Kingdom Plants Part 1

Exercise 4-Kingdom Plants Part 1 - Kingdom Plants- Part I...

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Unformatted text preview: Kingdom Plants- Part I Exercise 4 Plants Eukaryotic Multi-cellular Evolutionary History of Plants: Fresh water photosynthetic algae evolved 1200 million years ago Multi-cellular plants evolved over 500 million years ago Alternation of generations Sporophyte (2n) Produce haploid spores by the process of meiosis Spores become gametophye (n) by the process of mitosis Gametophyte(n) Gametophytes produce gametes by the process of mitosis Two haploid gametes produce a diploid gamete zygote through the process of fertilization Zygote produces sporophyte by the process of Alternation of generations Plants differ in which generation is most dominant. Fern Sporophyte Gametophyte Fern Rhizoids Root-like structures that anchor the prothallus into the soil. Antheridia Spherical structures that produce flagellated sperms Archegonia Structures that produce a single egg Receives the sperm for fertilization Classification of plants...
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This note was uploaded on 06/06/2011 for the course BIO 1201 taught by Professor N.haque during the Spring '09 term at CUNY City Tech.

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Exercise 4-Kingdom Plants Part 1 - Kingdom Plants- Part I...

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