Label the image below to test your understanding of the life cycle of black bread mold. Place your cursor on the boxes for hints. haploid (n) asexual reproduction thick-walled zygospore diploid (2n) sporangium nuclear fusion meiosis wind-blown spores (n) zygote mating type sexual reproduction mycelium Structure formed by nuclear fusion between two hyphae Stage of the life cycle that exhibits two sets of chromosomes Zygote that has developed a protective outer covering and undergoes a period of dormancy Type of reproduction involving the conjugation of hyphae from different mating types Reductive division Haploid structures that give rise to new mycelia Type of reproduction in which each mycelium produces sporangia In fungi, this is designated by "-" or "+". Asexual Reproduction mating type A mass of hyphae Structure in which meiosis occurs to form spores of both mating types Stage of the life cycle that exhibits one set of chromosomes Joining of nuclei from two hyphae of opposite mating types Reset
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Fungus (Rhizopus oligosporus) (haploid organism) Fern (Humata tyermanii) (diploid sporophyte) African fish eagle (Haliaeetus vocifer) (diploid organism) Gametes Male (n) Female (n) Mature organism (n) Gametophyte (n) Spore (n) Gametes Meiosis Fertilization HAPLOID (n) Spores (n) Gametes Male (n) Female (n) Male (n) Female (n) HAPLOID (n) HAPLOID (n) Meiosis Fertilization DIPLOID (2n) DIPLOID (2n) DIPLOID (2n) Zygote (2n) Meiosis Fertilization Zygote (2n) Sporophyte (2n) Mature Zygote (2n) organism (2n) In the haplontic life cycle, the mature organism is haploid and the zygote is the only diploid stage. In alternation of generations, the organism passes through haploid and diploid stages that are both multicellular. In the diplontic life cycle, the organism is diploid and the gametes are the only haploid stage. Using the information on ploidy of different life stages in the organisms above, and based on what you know about the effects of mitosis and meiosis on ploidy, which kind of cell division is responsible for the production of gametes in the three life cycles illustrated above? Mitosis or Meiosis: Fungi produce gametes via: Plants produce gametes via: Animals produce gametes via:
Adi S.
Match the following terms listed below: This type of sexual reproduction is dominated by the haploid stage Sacs that develop from the union or two hyphae Considered "higher" fungus with zygotic meiosis The only form of fungi that have flagellated gametes Mass of hyphae A type of cup fungus The product of Rhizopus sexual reproduction The facultative partner in lichen This type of sexual reproduction is half diploid and half haploid Produce mushroom spores
Katlin K.
Which part of the life cycle of black bread mold is the resting stage that can survive unfavorable conditions? a. mycelium b. zygospore c. gametangia d. zygote e. rhizoid
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