Chytridomycota = produce zoospores that have flagella (most primitive) Zygomycota = produce thick-walled structures called zoosporangia during reproduction. Ascomycota = produce spores in sac-like asci Basidiomycota = produce sexual spores in structure called basidia
1 mature egg. The remaining 3 cells produced by meiosis are non-functional and are called polar bodies. They are much smaller than the egg, i.e. the egg took all or their cytoplasm during the divisions
It is known as 'The Ovum' - or Egg Cell. It is also a meiotic Cell that when combined with the male equivalent [meiotic] sex Cell 'The Spermatid' forms 'The Zygote' - which then proceeds to Create The Organism.
Meiotic division is called reduction division because the daughter cells (called 'gametes') are haploid, that is, carry half the number of chromosomes of the parent cells. Gametes carry one chromosome of each homologous pair, whereas the diploid parent cells carry both.