BIO 2137 Chapter Notes - Chapter 16: Archegonium, Sporophyte, Ploidy
25 Feb 2015
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Answers to questions from the lab manual lab 5: bryophytes and seedless vascular plants. Phylum marchantiophyta: liverworts: are any gemma cups containing gemmae present on your plant? (p. 96) Yes, there should be some: what is the function of gemmae? (p. 96) Gemmae form in gemma cups and are dispersed primarily by splashes of rain and may then grow into new gametophyte, each genetically identical to the parent plant. It"s asexual reproduction: are the antheridia on the upper or lower disk surface? (p. 97) Antheridia are on the upper surface of the disk: does meiosis or mitosis produce the sperm nuclei? (p. 97) Mitosis: are the archegonia on the upper or lower surface of the archegoniophore? (p. 97) Mitosis, it is generated from the spores produced: how does this (antheridial disk use as a splash platform) facilitate sperm transfer to the female thalli? (p. 97)
