Question

When does reduction division occur in Ulothrix?

Answer 1

​​Meiosis, or reductional division, occurs in the Ulothrix at period of zygospore development.

1. Ulothrix has haploid plant body (gametophytic). I also produce zoo gametes (n), which unite to form a resting spores called a zygospore (2n) diploid.
2. When the conditions are favorable, the zygospore undergoes meiosis, or reductional division, which results in the formation of zoo­meiospores.
3. At the period of zygospore production in Ulothrix, reduced division i.e. meiosis occurs.
4. Ulothrix creates zoogametes (n) that unite to make zoosporic (2n) diploid, which is generally a resting spore, & their plant bodies are gametophytic (haploid).
5. Reduction divisions occurs in the anthers, generating haploid pollen grains and in the ovary developing haploid eggs).
6. Ulothrix is a genus of green algae which belongs to the Ulotrichaceae family.
7. Ulothrix is a non-branching filamentous green algae genus which can be found in both fresh & saltwater.
8. Its cells are generally as wide as they are long, and it thrives in the colder months of the year.