Animal vectors are required for pollination in

In plant species where pollen grains are covered by a mucilaginous layer to protect them from moisture,which agent is responsible for pollination?

Which of the following aquatic plants does not show pollination by water?

What is self-pollination?

Wind-pollinated flowers have long,well-exposed stigmas. This statement is:

Pollination in Ophrys (a Mediterranean orchid) occurs by