Which is functionally cross pollination involving pollination agent, but genetically it is simillar to $L$ autogamy?

Definations / Explanation :

$1.$ chasmogamous

$2.$ Cleistogamous

Which is incorrect statement for wind pollinated plants ?

Pollination by insect is

What are chasmogamous flowers? Can cross-pollination occur in cleistogamous flowers? Give reasons for your answer.

Geitonogamy is