Silver Birch are wind pollinated.
Yes, insects are needed to pollinate some flowers but no, they are not needed to pollinate all flowers. Insects count -- along with bats, birds, and some mammals and reptiles -- among nature's pollinators.
Tobacco flowers that need moths to pollinate have evolved to have white flowers. Tobacco flowers that need hummingbirds to pollinate have evolved to be deep pink.
bees pollinate them
Its called 'interdependence.' The flowers need the bees to pollinate them to survive, but the bees need the flowers so they can make honey, and the female bees pollinate flowers and keep pollen on there legs to feed there larve.
There will be no flowers and fruits.
Flowers don't pollinate.Bees pollinate the flower.
Bees pollinate flowers.
In short, they do. Greenhouses are not usually sealed, and insects can get in and out, and they will pollinate the flowers.
The ecological niche of a bee is the earth or sex
Yes, insects are needed to pollinate some flowers but no, they are not needed to pollinate all flowers. Insects count -- along with bats, birds, and some mammals and reptiles -- among nature's pollinators.
Tobacco flowers that need moths to pollinate have evolved to have white flowers. Tobacco flowers that need hummingbirds to pollinate have evolved to be deep pink.
pollinate flowers
yes they do
flowers
Animals help to pollinate flowers by landing on them and collecting pollen on their legs. This pollen is distributed to other flowers when that animal lands on it.
Silver Birch
They pollinate all sorts of flowers especially the walnut tree. They like to feed off walnuts.