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Describe the life cycle of Funaria emphasising the diploid and haploid stages.
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- The life cycle of Funaria is called diplo-haplontic. Give reason.Figure 24.14 Which of the following statements is true? A dikaryotic ascus that forms in the ascocarp undergoes karyogamy, meiosis, and mitosis to form eight ascospores. A diploid ascus that forms in the ascocarp undergoes karyogamy, meiosiis, and mitosis to form eight ascospores. A haploid zygote that forms in the ascocarp undergoes karyogamy, meiosiis, and mitosis to form eight ascospores. A dikaryotic ascus that forms in the ascocarp undergoes plasmogamy, meiosis, and mitosis to form eight ascospores.What are the distinguishing features of the sexual and asexual phases for Chlamydomonas? What is the term for the type of syngamy (cell fusion) that occurs between gametes of this Genus? Why? MacBook Pro %24 4 %23 3 5 6 W E R T F G H K C V M
- Describe asexual and sexual reproduction in Dryopteris.What are the distinguishing features of the sexual and asexual phases for Chlamydomonas? What is the term for the type of syngamy (cell fusion) that occurs between gametes of this Genus? Why? O words p.Draw and label the microsporopyll, microsporangia, megasporophyll and ovules of Cycas revoluta reproductive structures
- In embryophytes, especially spermatophya, what is the difference between a "sporocyte" (e.g., megasporocyte) and the actual spore (e.g., megaspore)? a) Meiosis: Megasporocyte is still diploid, megaspore haploid b) Mitosis, number of nuclei: Megaspore has eight cell nuclei, megasporocyte only one c) Cytokinesis: Megasporocyte has only one cell, Megaspore can have several (as endosporic gametophyte). d) None: the two terms are synonymous. e) Meiosis: Megaspore is still diploid, megasporocyte haploidThe basidium of the club fungi could be correctly described as; A reproductive structure that produces diploid spores A sexual reproductive structure that produces 4 haploid spores An asexual reproductive structure that produces thousands of spores A sexually reproductive structure that produces 8 haploid sporesLabel all parts of the diagram of the life cycle diagram of Mnium. Indicate where meiosis and fertilization occur in the diagram. Distinguish between haploid and diploid structures by applying color or labelling the diagram
- How could you distinguish a plurilocular to a unilocular zoosporangium in brown algae? What are produced upon the germination of the diploid and the haploid zoospores?Describe the similarities and differences in the sexual reproduction of the following: Chlamydomonas and Spirogyra.After plasmogamy has occurred, many molds (Mucoromycetes) exist in a heterokaryotic stage for up to centuries at a time. What occurs at the immediate end of this stage? The nuclei fuse in a process called karyogamy. The hyphae fuse in a process called karyogamy. Diploid spores are produced in various spore-producing structures. A haploid zygote is formed that becomes multicellular through repeated rounds of mitosis.