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relatively very few female gametes. Why?
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- One of the genera of Lycophytes are the Selaginellaceae. Like other Lycophytes, Selaginellids bear their spores in a strobilus but they have an unusual strobilus. Which answer below best describes this difference? O their spores are always diploid O they are gaemtophyte dominant O their spores are heterosporous O their strobilus is dependnent upon the female gametophyte like mosses APR 25 étv MacBook Pro G Search or type URL @ #3 % %24One of the genera of Lycophytes is Selaginella. Like other Lycophytes, Selaginellids bear their spores in a strobilus but they have an unusual strobilus which sets them apart from their relatives. Which answer below best describes this distinction? their spores are always diploid O they are gametophyte-dominant their spores are heterosporous their strobilus is dependnent upon the female gametophyte like mossesThe egg and sperm producing strcutures of pteridophytes are found on the gametophyte, also called the
- The photo below is a longitudinal section (I.s.) of the strobilus of Selaginella at 40x. How does this photo illustrate the importance of the previous question?The gametophyte of Pteridophytes is inconspicuous in comparison to the mosses. They are also commonly monecious (single house for male and female gamete production). The photo below shows a whole mount (w.m.) of a fern gametophyte at 4x. Make a sketch of the specimen and label the following structures: archegonium, antheridium, mature gametophyte (prothallus), rhizoids AMooD ok DrThe gametophyte of Pteridophytes is inconspicuous in comparison to the mosses. They are also commonly monecious (single house for male and female gamete production). The photo below shows a whole mount (w.m.) of a fern gametophyte at 4x. Make a sketch of the specimen and label the following structures: archegonium, antheridium, mature gametophyte (prothallus), rhizoids MacB
- The gametophyte of Pteridophytes is inconspicuous in comparison to the mosses. They are also commonly monecious (single house for male and female gamete production). The photo below shows a whole mount (w.m.) of a fern gametophyte at 4x. Make a sketch of the specimen and label the following structures: archegonium, antheridium, mature gametophyte (prothallus), rhizoidsThe male gametophyte of the moss looks identical to the female from the naked eye, but the photo below (I.s. at 4x and then at 40 x) shows that the tip contains the structures where male gametes are produced.If ferns produce spores, are they a sporophyte or agametophyte? Are they haploid or diploi Describe two differences between a fern sporophyte and a moss sporophyte. Are fern spores haploid or diploid? Are the spores produced by meiosis or mitosis? Where are the spores produced?
- Give the advantages and disadvantages of having a dominant gametophyte phase in the life cycle of the Bryophytes.In what respect the spoprophyte of Pteridophytes and Spermatophytes areidentical.Do mosses have an alternation of isomorphic or heteromorphic generations? That is, can you easily tell a moss gametophyte from a moss sporophyte? When we look at leafy green moss plants, what are we seeing—the gametophyte or the sporophyte? In a flowering plant species, would the equivalent stage be the plant or the pollen grains and megagametophytes?
