Question

Which is the correct order of steps involved in the sexual reproduction of fungi?

• A. Meiosis, karyogamy, plasmogamy
• B. Karyogamy, plasmogamy, meiosis
• C. Plasmogamy, karyogamy, meiosis
• D. Karyogamy, meiosis, plasmogamy

Answer 1

The correct option is C Plasmogamy, karyogamy, meiosis

With the exception of class deuteromycotina (fungi imperfecti), we find sexual reproduction in all other classes of fungi. During sexual reproduction, the compatible nuclei show a specific behaviour which is responsible for the onset of three distinct mycelial phases. The three phases of nuclear behaviour during sexual reproduction in fungi are:

Plasmogamy: Fusion of two protoplasts (fusion of cells of fungi).
Karyogamy: Fusion of two nuclei to form zygote.
Meiosis: Diploid zygote gives rise to haploid spores (the reduction division).