Gametes fail to fuse in Chlamydomonas. The process is
(a) Isogamy
(b) Anisogamy
(c) Syngamy
(d) None of the above

Options

A. Isogamy
B. Anisogamy
C. Syngamy
D. None of the above.

Answer

To solve the question regarding the process in which gametes fail to fuse in Chlamydomonas, we can analyze the options provided:

1. **Understanding Chlamydomonas**:
- Chlamydomonas is a green alga that belongs to the group Chlorophyta. It can reproduce sexually through different modes.

2. **Analyzing the Options**:
- **(a) Isogamy**: This is a type of sexual reproduction where two gametes of similar size and shape fuse together. Since the question states that gametes fail to fuse, this cannot be the correct answer.
- **(b) Anisogamy**: This involves the fusion of two gametes that are of unequal size (one larger and one smaller). Again, since the question specifies that the gametes do not fuse, this option is also incorrect.
- **(c) Syngamy**: This term refers to the actual fusion of male and female gametes. Since the question indicates that the gametes fail to fuse, this option cannot be correct either.
- **(d) None of the above**: Given that none of the previous options correctly describe a situation where gametes fail to fuse, this option seems to be the most appropriate.

3. **Conclusion**:
- The correct answer is **(d) None of the above**. This is because in the context of Chlamydomonas, if the gametes fail to fuse, it does not fall under isogamy, anisogamy, or syngamy.