Question

Plasmogamy refers to _______________________.

• A. The fusion of two haploid hyphae with simultaneous nuclear fusion
• B. The fusion of two haploid hyphae without simultaneous nuclear fusion
• C. Fusion of egg cell with sperm
• D. Fusion of sperm with polar nuclei

Answer 1

The correct option is C Fusion of egg cell with sperm

The sexual reproduction of fungi has three phases, namely plasmogamy, karyogamy, and meiosis. There is a fusion of two protoplasts that carries together two compatible nuclei within the same cell in plasmogamy. This pair of nuclei is named as a dikaryon (resulting cell becomes bi-nucleate). So, it is the fusion of two haploid cells without nuclear fusion.

In the case of lower fungi, plasmogamy is immediately followed by karyogamy. But in higher fungi, these two processes may be parted in time.

Thus option C is correct