Answer:
Mandel had performed simple experiments by using pea plants having definite traits of opposite expression as Tall or Dwarf, Round seed
Explanation:
Metabolism i think hahahahahhaa lol
In pollination, the brightly coloured petals and external agents like wind,water,air and insects are involved. But, in fertilization the male reproductive organs and the female reproductive organs are involved (I.e. stamen and the stigma).