or d P How do moss leaves differ from the leaves of vascular plants? Where does meiosis take place in mosses? Where, in mosses, are zygotes and embryos formed?
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- How does a haplontic plant population maintain genetic diversity? Zygotes are produced by random fusion Gametes are created through meiosis Diploid spores undergo independent assortment during mitosis The zygote undergoes meiosis to generate a haploid sporophyte.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.Figure 26.8 At what stage dees the diploid zygote form? when the female cone begins to bud from the tree at fertilization when the seeds drop from the tree when the pollen tube begins to grow
- The leafy, green moss plants that are familiar are gametophytes, haploid plants. This is very different from flowering plants and other seed plants. Does a leafy green moss plant grow from a spore or from a fertilized egg? Does the moss plant have both paternal parent and maternal parent?In a particular plant species, 2n=12. For this organism, how many chromosomes, and how many DNA molecules will be present per cell for each of the following? e) root meristem cell in telophase of mitosis (cytokinesis complete) f) microspore mother cell (in anther) in prophase 1 of meiosis g) microspore mother cell in metaphase II of meiosis h) pollen grain ( after meiosis is and cytokinesis complete)a. How do the moss gametophyte and sporophyte stages obtain their energy b. Is the prominent part of the liverwort haploid or diploid?
- 1. What is the ploidy (chromosomal condition) of the dominant plant body of Fern, Pine tree and Gumamela?2. What are the spore bearing structures of Fern, Pine tree and Gumamela?What is the structure of theadult fern within which cellsundergoing meiosis can befound?7. How does a haplontic plant population maintain genetic diversity?a.Zygotes are produced by random fusion.b.Gametes are created through meiosis.c.Diploid spores undergo independent assortment during mitosis.d.T h e zygote undergoes meiosis to generate a haploid sporophyte.
- The embryos of diploid plants are ____________. Group of answer choices diploid Haploid, diploid or tetraploid could all be correct because the ploidy number varies depending on the embryo’s developmental stage. tetraploid None of answers shown are correct because embryos lack genetic material. haploidWhich of the following IS found in basal land plants (Embryophyta), but NOT found in Chara?a. Multicellular gametangia with sterile jacket.b. Diploid mitosis.c. Photoautotrophous gametophyted. Haploid mitosis.e. Sperm cells with two flagellaIn 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 haploid