pollen造句

Ben is allergic to pollen.

Grains of pollen on a geranium stigma.

The air is pure, with neither pollution nor pollen.

There is a high pollen count in the air.

Pollen from a Pistia: Hayfever occurs because plants need to transfer pollen by wind and insect to fertilization and reproduce.

The pollen is shed directly on the stigma.

One orchid deposits its pollen on a particular bee's front legs. The other leaves pollen only on the bee's abdomen.

Autumn is also a season of high occurrences of pollen, so people allergic to pollen should avoid going out too much, especially on windy days.

Anther is a part of a flower that contains the pollen.

Star of the show: Yellow geranium pollen on a starfish-shaped stamen.

Earlier pollen analyses also indicated a delay between the time of death and burial.

When Bryant concluded his examination of the pollen in this sample he found clover and wildflowers clearly outnumbering a smattering of grains of blackberry pollen.

Wind-blown cypress pollen is a major cause of allergies in some parts of the world.

The city's researchers first turned to the usual suspects, such as air pollution, pollen and mould.

A bee, after all, can only carry so much pollen at once. The wind is not so limited.

The bees seek pollen; if they land by mistake in a blossom's pool of nectar, they will probably drown.

Wash your hair before going to bed as pollen can get caught in your hair when you are outside.

The evidence lies in ocean mud, in fossil pollen, and in changes in ratio of chemical isotopes that record shifts in temperature.

An over-reactive immune system is also the cause of allergies, where a harmless agent (such as pollen) can lead to an unnecessary immune response.

Cross-pollination isn't ensured when an ant picks up pollen off a pancake plant: The ant may then crawl to the ground or another species.

He removed the stamens from the flowers and photographed them using polarized light, to enhance the oranges and browns of the anthers, the pollen-carrying heads.

And so is pollen. Local plants put forth an abundance of the stuff in a bid to ensure their continued existence, even in the hardest concrete jungles.

The colorful nests make moist, secure Chambers for the larvae to grow, feast on nectar and pollen laid by its parents, and build a cocoon to wait out the winter.

Samples of mud and pollen taken from a lake suggest llama dung, used as fertilizer, helped the ancient people of the Andes make the transition from hunter-gathering to farming.

If I asked, she would sprinkle her magic flower pollen on me to make me small, and we would squeeze through the crack in the front door and go off into the woods together.

the biramous appendages of an arthropod; long branched hairs on its legson which pollen collects; a forked river; a forked tail; forked lightning; horseradish grown in poor soil may develop prongy roots.

The rise will be fuelled by air pollution in urban areas which exacerbates the symptoms of sneezing, runny nose and eyes triggered by pollen, says the Hay Fever Health Report.