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The haplontic life forms produce the gametes through mitosis. The gametes unite and develop into adult plants. The spores settle and grow to form male and female plants. Ulva: Sea lettuce. The thallus of ulvoid species is flat and blade-like and is composed of two layers of cells. In haplontic life cycle, the zygote is the only diploid (2n) stage, and mitosis occurs only in the haploid (n) phase. During the second phase, the male and female plants produce gametes by mitosis. Life Cycle of Ulva XI Biology Chapter 9 Kingdom Protista #Life #Cycle #Ulva #Biology #Kingdom #Protista. In this article we will discuss about the life cycle of laminaria, explained with the help of suitable diagrams. Pattern # 2. This life cycle is also known as monogenic life cycle. Since individual haploid (n) cells are formed by mitosis, this life cycle is referred to as haplontic life cycle. This is a small genus of marine and brackish water green algae. Introduction The haplodiplontic life cycle of the multicellular green alga Ulva mutabilis (F^yn, 1959) is shown schematically in Fig. 80758).Often detached and free-floating at midtide (Ref. Used as medicine and source of vitamins E, A, and B1 (Ref. are a group of multicellular green algae that exhibit an alternation of generation life cycle as found in land plants. 80758).Also has the potential use as animal feeds in the form of ground meal (Ref. Ulva sp. A haploid life cycle is found in most fungi and in some green algae … Ulva Life Cycle: (sporic meiosis)-Haploid and Diploid forms alternate-Sporophyte > haploid zoospores via meiosis > zoospores become haploid gametophytes > produce gametes > gametes release into ocean to fuse > become diploid zygotes > zygotes grow into sporophyte. This type of life cycle is found in majority of Chlorophyceae like Chlamydomonas, Ulothrix, Oedogonium, Spirogyra, Chara etc. Diagram, Formula and Economic Importance - Duration: 7:00. your own Pins on Pinterest After fertilization a zygote is formed: this cell is the only diploid cell in the entire life cycle. This includes the life cycles of many protozoa, all fungi, and some algae types. It is thus that same zygotic cell that later undergoes meiosis. The growth response of Ulva lactuca L. to different combinations of phosphorus and nitrogen was followed using discs cut from the expanded region of mature plants. Diplontic Life Cycle: The plant body is sporophyte and develops sex organs. Sea lettuce goes through two reproductive phases. 801). The sporophytes prodüce zoospores by a meiotic sporulation division independent of beinghaploid or diploid (Hoxmark and Nordby, 1974). 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