BIO 1130 Lecture Notes - Lecture 7: Archegonium, Lycopodiopsida, Meristem

• School: University of Ottawa
• Department: Biology
• Course: BIO 1130
• Professor: Jon Houseman

Document Summary

Gametophyte haploid cells that stayed green vs specialized cells that take on role of making gametes, under morphological changes to become sperm or egg. Diff from algae, sperm released swims arrives on a archegonia swims down channel and fertilizes egg in bottom now diploid egg and divides become multicellular diploid cells in archegonia mitotic divisions. ^ultimately become the development of the sporophyte sits inside archegonia and makes spores to be released they undergo meiosis sporophyte undergo meiosis to make spores and the spores will be released and develop a new plant. Thallus mass of photosynthetic cells not leaves. Thallus grows 2 structures archegonia and antheridia. Cuticle wax with open pores to get co2 in photosynthetic cells cant close restriction to moist environments. Rhizoids rootlets not roots no vascular tissue can be long single cell extends in the soil and absorbs moisture. Umbrella like structure of archegonia splashing of rain shoots sperm to archegonia and fertilization occurs.