Sentences with phrase «pollen than flowers»

Not exact matches

(Pollen from flowering plants is spread by insects — rather than becoming airborne — so it doesn't tend to cause allergies.)

New research shows that hotter weather coupled with higher concentrations of carbon dioxide in the air prompt flowering plants to produce pollen that is far more noxious than pollen of the past.

In a laboratory experiment, they discovered that pollen from darker flowers was more likely to germinate when grown under harmful UV light than pollen from flowers that were lighter, with smaller bull's - eyes.

These beautifully preserved 240 - million - year - old pollen grains are evidence that flowering plants evolved 100 million years earlier than previously thought, according to a new study in the open - access journal Frontiers in Plant Science.

They found that insects other than bees performed 25 % to 50 % of total flower visits, though they transferred less pollen per visit than bees, according to a study published yesterday in the Proceedings of the National Academy of Sciences.

From the male point of view, the loss of the home flower's seeds could be more than recouped by repeated moth visits to pick up more pollen to spread to other flowers.

In this new study, the researchers found that, while bumblebees exposed to pesticides collected more pollen than control bees, control bees were able to learn how to manipulate these complex flowers after fewer visits.

But to be sure, he wants to repeat the study with pollen from hummingbird - adapted, rather than bat - adapted, flowers.

Pollen collection by bees is often very effective that less than 1 — 4 % of the flower's pollen grains reach conspecific stigmas [4,12 &mdashPollen collection by bees is often very effective that less than 1 — 4 % of the flower's pollen grains reach conspecific stigmas [4,12 &mdashpollen grains reach conspecific stigmas [4,12 — 16].

Manuka honey is made with pollen gathered from the flowers of the Manuka bush (a medicinal plant), and clinical trials have found this type of honey can effectively eradicate more than 250 clinical strains of bacteria, including resistant varieties such as: