Question

When the pollen is transferred from anther to the stigma of the same flower, the pollination is called autogamy.

(a) Cleistogamous flowers are invariably autogamous. Explain.

(b) Geitonogamy is functionally cross pollination, but genetically similar to autogamy. Justify the statement

Answer 1

(a) In this, flowers are not open pollen falls to the stigma of the same flower and seed setting takesplace without the influence of external agency. 

(b) In geitonogamy transfer of pollen grains from the anther to the stigma of another flower of the same plant.

Functionally geitonogamy is a type of cross pollination but it is genetically similar to autogamy since the pollen grains come from the same plant.