Question
Differentiate between : self pollination and cross pollination.

Answer

Self pollination Cross-pollination
$(1)$ Self pollination is the transfer of pollen grains from anther to filament within the same flower. $(1)$ Cross pollination is the transfer of pollen grains from anther to filament of another flower.
$(2)$ It occurs either in the same flower or another flower of the same plant. $(2)$ It occurs between two flowers that are on different plants but are of the same species.
$(3)$ It occurs in the flowers which are genetically same. $(3)$ It occurs between the flowers which are genetically different.

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