pollen grain

collocation in English

meaningsofpollenandgrain

These words are often used together. Click on the links below to explore the meanings. Or,see other collocations withgrain.
pollen
noun[U]
uk
/ˈpɒl.ən/us
/ˈpɑː.lən/
a powder, produced by the male part of a flower, that causes the female part of the same type of flower to produce seeds. It is carried by insects or ...
See more atpollen
grain
noun
uk
/ɡreɪn/us
/ɡreɪn/
a seed or seeds from a plant, especially a plant like a grass such as rice ...
See more atgrain

(Definition ofpollenandgrainfrom theCambridge English Dictionary© Cambridge University Press)

Examplesofpollen grain

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.
Before being released from the anther, thepollengrainusually becomes desiccated and enters in a phase of stasis.
From theCambridge English Corpus
The cytoplasmic channels, present in the outer part of the intine of the mature, dehydratingpollengrain, degenerate and develop into electron-dense inclusions.
From theCambridge English Corpus
The apertures are various modifications of the wall of thepollengrainthat may involve thinning, ridges and pores.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
Meridionosulcate pollen have a furrow that runs along the equator of thepollengrain.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
It is possible to identify a plant species from itspollengrain.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
Once apollengrainsettles on a compatible pistil, it germinates in response to a sugary fluid secreted by the mature stigma.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
One day he watched through a microscope and saw transparent cones emerge from the side of a geraniumpollengrain.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
The infection process mimics apollengraingrowing into an ovary during fertilization.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
It was argued that palaeobotanists would be unhappy if the pollen organs were named using the taxonomic name whose type specimen is apollengrain.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
Electron microscopy shows that the tapetal cells that surround the developingpollengrainin the anther have a highly active secretory system containing lipophilic globules.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
These two cells in addition to the spore wall make up an immaturepollengrain.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
Once thepollengrainlands on the stigma of a receptive flower (or a female cone in gymnosperms), it takes up water and germinates.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
Monosulcate pollen has a single furrow that runs along the pole of thepollengrain.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
The pollen tube passes through thepollengrainwall by way of structures called apertures.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
The outer pollen wall, which prevents thepollengrainfrom shrinking and crushing the genetic material during desiccation, is composed of two layers.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
Conditions for a viroid to infect its host include wounds on the host or infectedpollengraindeposited into an ovule.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
It begins when apollengrainadheres to the stigma of the carpel, the female reproductive structure of a flower.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
This folding of thepollengrainprevents water loss until it arrives in a wetter environment.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
At the end of each is a carpel, which may develop into a kernel if fertilized by apollengrain.
From
Wikipedia
This example is from Wikipedia and may be reused under a CC BY-SA license.
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.
Want to learn more?
Go to the definition ofpollen
Go to the definition ofgrain
See other collocations withgrain