Question

Cross pollination does not occur in

• A. Allogamous flowers
• B. Geitonogamous flowers
• C. Cleistogamous flowers
• D. Chasmogamous flowers

Answer 1

The correct option is C Cleistogamous flowers

Cleistogamous flowers characteristics:

• They do not open at all.
  
• The anthers and stigma lie close to each other.
  
• When anthers dehisce in the flower buds, pollen grains come in contact with the stigma to effect pollination. It is autogamous.
  
• They produce assured seed-set even in the absence of pollinators.
  

Thus, they do not show cross pollination.

So, the correct answer is 'Cleistogamous flowers'