When organisms had to choose between strength and growth, the fungus chose growth.  Fungi use cytoplasmic streaming to cause rapid growth in their hyphal tips of the mycelium.  It's chromosomes and nuclei are smaller than other organisms.

From prophase to anaphase of mitosis.

Nuclear envoleope does not dissolve.  It pinches in the middle and splits.  The spindle fibers then disappear.

Spores.

These are produced sexually and asexually in special areas of the hyphae.  Most are unicellular.  Under nondynamic conditions, the spores are created asexually; under changing conditions, the spores are created sexually.

Hyphae and Spores.

Both are haploid with transient stages of diploidy.  Sometimes mycelia are heterogeneous due to the fusion of 2 genetically different nuclei.

Syngamy.

This is the sexual union of cells consisting of 2 stages:  plasmogamy and karyogamy.  Both are fusions; however, plasmo- is the fusion of the cytoplasm and karyo- is the fusion of the nuclei.  If after plasmogamy the nuclei do not fuse a dikaryon has been created.  Usually after a dikaryon exists after weeks or months it will go directly into meiosis.

Next:  "Fungi classifications."