pl div handout S07 - PLANT DIVERSITY AND LIFE CYCLES BioG...

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PLANT DIVERSITY AND LIFE CYCLES BioG 104 Lecture P. R. (Dick) Ecklund DEFINITIONS gamete: haploid sexual reproductive cell which, when fused with another gamete zygote , a cell with a diploid nucleus. In plants, animals and some protists, a zygote multicellular diploid organism. syngamy: (= fertilization) fusion of nuclei of two gametes to form a zygote. spore: asexual reproductive cell which, by itself multicellular organism. If a spore is haploid, it produces a haploid organism. zygote (2n) SYNGAMY (fusion of gametes) spore mother cells (2n) MEIOSIS Generalized life cycle of a bryophyte mature multicellular sporophyte sporangium on sporophyte DIPLOID HAPLOID sperm antheridium (male repro. structure) egg archegonium (female repro. structure) female spores (1n) mature multicellular female gametophyte embryo with with mature multicellular male gametophyte male spores (1n) and DEFINITIONS PERTAINING TO PLANTS sporophyte: multicellular diploid plant which produces spores. sporangium: multicellular diploid structure of the sporophyte in which spores are produced. gametophyte:
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pl div handout S07 - PLANT DIVERSITY AND LIFE CYCLES BioG...

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