Question:

When there are two haploid nuclei per cell in some fungi before the formation of diploid, this stage is called

  • diplotene
  • diplophase
  • dikaryophase
  • dikaryote
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The Correct Option is C

Solution and Explanation

Sexual reproduction in fungi involves two step, ie, plasmogamy and karyogamy. When two haploid nuclei lie side-by-side in common cytoplasm before the formation of diploid, this stage is called dikaryophase. Diplotene is the sub-stage of prophase-I in meiosis.
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Concepts Used:

Biological Classification

The process of grouping living organisms into categories is called biological classification. The most modern 5-kingdom classification was put ahead by an eminent scientist R.H.Whittaker. The five-kingdom classification is based on the criteria like cell structure, mode of nutrition, body form, and reproduction. One of the most important characteristics of this system is that it follows the evolutionary sequence of living organisms. The organisms are classified into distinct taxa or levels like Kingdom, Phylum, Division, Class, Order, Family, Genus, and Species. The 5 kingdoms are as follows:

Biological Classification