Explanation:
The common mode of sexual reproduction in chlamydomonas is isogamous.
Chlamydomonas has both asexual and sexual reproduction.
While sexual reproduction can be isogaus, anisogamous, or oogamous, asexual reproduction occurs through zoospores.
However, fusion frequently occurs between similor gametes, leading to isogamy as the method of reproduction.
Isogamy- It is a primitive type of sexual reproduction occurs in lower forms. The fusing gametes are morphologically similar in size, form and structure and are called isogametes. Isogamous sexual reproduction is common in some species of chlamydomonas.