Where does meiosis occur in Chlamydomonas?
Chlamydomonas is haploid plant. The zygospore (zygote) is formed by the fusion of gametes. The meiosis takes place in zygospore.
What type of life cycle meiosis does Chlamydomonas have?
In haplontic life cycle, the dominant phase is haploid. The diploid stage is present only in the form of zygote or zygospore. Meiosis occurs at the time of its termination of the zygote (zygotic meiosis, e.g., Ulothrix, Spirogyra, Chlamydomonas, etc.).
Where does meiosis usually occurs in red algae?
Meiosis (a) takes place in the sporophyte (diploid) to produce haploid spores. First cell division in germinating spores is asymmetric (b) and they grow into multicellular gametophytes.
What is the life cycle of Laminaria?
The life cycle of Laminaria has heteromorphic alternation of generations which differs from Fucus. At meiosis the male and female zoospores are produced separately, then germinate into male and female gametophytes. The female egg matures in the oogonium until the male sperm fertilizes it.
What life cycle does Chlamydomonas have?
Chlamydomonas and many of its green algal relatives proliferate using a modified cell cycle, termed multiple fission (also referred to as palintomy; Figure 3). Multiple‐fission cell cycles are characterized by a prolonged growth phase (G1), during which cells can enlarge by more than two‐fold in size.
What are the three types of life cycles?
A life cycle is a period involving one generation of an organism through means of reproduction, whether through asexual reproduction or sexual reproduction. In regard to its ploidy, there are three types of cycles; haplontic life cycle, diplontic life cycle, diplobiontic life cycle.
What is Oedogonium life cycle?
The life cycle of Oedogonium is haplontic. The egg from the oogonia and the sperm from the antheridia fuse and form a zygote which is diploid (2n). The zygote then undergoes meiosis and reproduces asexually to form the filamentous green alga which is haploid (1n).