What is the difference between Homothallus and Heterothallus;  Megasporangium and Microsporangium ; Protenema and Prothallus ?

 

  • Homothallus: Having male and female reproductive structures on the same thallus, as in some fungi and algae.
  • Heterothallus: Producing male and female reproductive structures in different structures or plants

 

  • Microsporangia are the structures that give rise to male gametes or microspores or pollen grains. (Microsporanium - singular).
  • Megasporangia are the structures that give rise to female gametes or megaspores or ovules. (Megasporanium – singular).

 

  • Protonema is the first stage in the life cycle of a moss, developing directly from the spore. It consists of creeping, green, branched, and often filamentous structures.
  • Prothallus is the gametophyte of pteridophytes like fern that bears sex organs and produces gametes.

 

 

 

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