Question

butterflies play an important role in the pollination of nocturnal flowers is this true​

Answer 1

Answer: yes, that's true.

Explanation: The nocturnal flowers with pale or white flowers heavy with fragrance and copious dilute necter which attracts these type of insects such as butterfly moths.

Answer 2

True
When a butterfly sits on a bright flower to suck nectar pollen grains stick to their body parts and this is how they are transferred from one flower to another
Noctural flowers have a strong scent for eg. Jasmine that attracts a butterfly.