Life Cycle of a Bryophyte Look at samples at corresponding stations 1A, 1B, 2A, 2B and 3. Fill in the following blanks and answer the questions in the lab handout Stage 2A ARCHAEGONIUM (egg) Ploidy = ____ Fertilization Stage 2B ZYGOTE Ploidy = ____ (forms on the gametophyte) Stage 1 ANTHERIDIUM Division = ____ (sperm) Ploidy = ____ Stage 3 GAMETOPHYTE Ploidy = n Multicellular (Y/N)? SPOROPHYTE SPORES Ploidy = ____ Ploidy = ____ Multicellular (Y/N)? Life Cycle of a Seedless Vascular Plant Look at samples at corresponding stations 1, 2, 3, and 4 Fill in the following blanks and answer the questions in the lab handout Stage 1b Stage 2 Division = meiosis SPORES Stage 1a sporangia Ploidy =__ Sori (clusters of Stage 2 sporangia on underside) ARCHAEGONIUM Stage 3 (egg) Ploidy =__ close up of sori (big black dots) SPOROPHYTE ANTHERIDIUM Stage 4 (sperm) Ploidy =2n Ploidy =__ (small black dots) Multicellular (Y/N)? GAMETOPHYTE (aka prothallus) ZYGOTE Ploidy =__ Ploidy =__ Sporophyte grows Multicellular (Y/N)? directly on the prothallus Life Cycle of a Gymnosperm Look at samples at corresponding stations 1, 2A, 2B, 3A, 3B, 4A and 4B Fill in the following blanks and answer the questions in the lab handout Stage 3A Stage 4A Microsporangium Division = ____ Stage 2A with microspores Ploidy =__ Pollen (sperm contained within) Longitudinal section of male cone Male cones with MALE GAMETOPHYTE microsporangia Stage 2B Stage 3B Ploidy =__ Stage 1 Megasporangium Division = ____ archaegonium Stage with megaspores egg 4B Female cones with Ploidy =__ microsporangia Longitudinal section of female cone megasporangium FEMALE GAMETOPHYTE Ploidy =__ SPOROPHYTE Seed Division = ____ Fertilization Ploidy =2n disperses ZYGOTE Ploidy =__ Life Cycle of an Angiosperm Look at samples at corresponding stations 1, 2, 3, 4 and 5 Fill in the following blanks and answer the questions in the lab handout Stage 2 microsporangium (aka pollen sac) Division = ____ Stage 4 microspore Ploidy =__ anther Cross section of anther (sperm contained within) Stage 1 Stage 2 MALE GAMETOPHYTE (aka pollen) Ploidy =__ ovary Stage 5 megasporangium (aka ovule) Division = ____ SPOROPHYTE Stage 3 megaspore (contained within the megasproangium) Ploidy = 2n Cross section of ovary Ploidy =__ FEMALE GAMETOPHYTE (aka embryo sac) Ploidy =__ Multicellular (Y/N)? ZYGOTE Ploidy =__ .