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单词 pollen
释义
pollen
noun[U]
uk
/ˈpɒl.ən/us
/ˈpɑː.lən/
apowder,producedby themalepartof aflower, thatcausesthefemalepartof the sametypeofflowertoproduceseeds. It iscarriedbyinsectsor thewind.
花粉
picture of pollen
paulbein/iStock/Getty Images Plus/Getty Images /GettyImages
SMART Vocabulary: related words and phrases
Plant reproduction
  • asexuality
  • asexually
  • barren
  • barrenness
  • breeder
  • cross-pollination
  • endosperm
  • germinate
  • pollinate
  • pollination
  • pollinator
  • propagate
  • propagation
  • propagative
  • siltation
  • sporangium
  • spore
  • stigma
  • unfruitful
  • wind pollination
See more results »

You can also find related words, phrases, and synonyms in the topics:

Flowers - general words

pollinate

verb[T]uk
/ˈpɒl.ə.neɪt/us
/ˈpɑː.lə.neɪt/
Bees pollinate theplantsbycarryingthe pollen from oneflowerto another.

pollination

noun[U]uk
/ˌpɒl.əˈneɪ.ʃən/us
/ˌpɑː.ləˈneɪ.ʃən/
Manyspeciesoftreedependon thewindfor pollination.
(Definition ofpollenfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)
pollen
noun[U]
uk
/ˈpɒl.ən/us
/ˈpɑː.lən/
apowder,producedby themalepartof aflower, thatcausesthefemalepartof the sametypeofflowertoproduceseeds. It iscarriedbyinsectsor thewind.
花粉

pollen| American Dictionary

pollen
noun[U]
us
/ˈpɑl·ən/
biology
apowderproducedby themalepartof aflowerthatcausesthefemalepartof otherflowersof the sametypetoproduceseeds
(Definition ofpollenfrom theCambridge Academic Content Dictionary© Cambridge University Press)

Examplesofpollen

pollen
This means thatpollentransferred within a patch contributes to geitonogamous self-pollination.
From theCambridge English Corpus
Secondly, inflorescences were visited by numerous nitidulids almost always loaded withpollen.
From theCambridge English Corpus
The airstream directs thepollenup a tube having openings, at several different points along its length, through which thepollenis dispersed.
From theCambridge English Corpus
Pollenrecords poorly reflect cyclical droughts seen in isotopic records, as natural vegetation has adapted to these fluctuations.
From theCambridge English Corpus
Some core sections had decreased in length due to dewatering since the cores were originally collected and sampled forpollenand microscopic charcoal in 1989.
From theCambridge English Corpus
The total number ofpollengrains, the number and percentages of species-specific grains and recognizable heterospecificpollentypes are shown.
From theCambridge English Corpus
The following sequence of floral parameters was noted: anthesis, odour release, nectar secretion,pollenliberation, and receptivity of stigmas.
From theCambridge English Corpus
The attraction of both predators to the leaves containingpollenmay be the reason for the lower levels of predation on the plants containingpollen.
From theCambridge English Corpus
Values are expressed as percentages of thepollensum.
From theCambridge English Corpus
Elements of the local mire vegetation, fern spores and other palynomorphs were not included in thepollensum.
From theCambridge English Corpus
With pieces of tape,pollenwas sampled from forehead, throat and cheeks and studied in a scanning electron microscope.
From theCambridge English Corpus
This method uses a mixture of anhydrous acetic acid and sulphuric acid, which is heated to preparepollenfor examination under a light microscope.
From theCambridge English Corpus
We detected significant structuring of style morphs and neutral markers in populations, probably because of restrictedpollenand seed dispersal.
From theCambridge English Corpus
The discerniblepollentypes of heterospecificpollenwere noted, but it was not always possible to count these types individually.
From theCambridge English Corpus
The hind legs and lower abdomen rapidly became coated with a thick layer ofpollen.
From theCambridge English Corpus
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
#https://dictionary.cambridge.org//dictionary/english/pollen##
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更新时间：2024/12/28 0:56:51