QS Study

Differences between Self-pollination and Cross-pollination:


  1. Occurs in the same flower or between two flowers of the same plant.
  2. Pollination usually occurs before blooming.
  3. Does not need the presence of other plants of the same species nearby.
  4. Depends little on pollinating agents
  5. Purity of species preserved
  6. No new variety develops.


  1. Occur between two flowers of two different plants.
  2. Pollination occurs after blooming.
  3. Needs the presence of other plant of the same species nearby.
  4. Depends completely on pollinating agents.
  5. Purity of species is not preserved.
  6. Possibilities of origin of new varieties.