pollen grain
Americannoun
Etymology
Origin of pollen grain
First recorded in 1825–35
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In the process of plant reproduction, when a pollen grain that transports male gametes lands on the stigma of another flower, it initiates the formation of a pollen tube.
From Science Daily ● May 21, 2024
Normally, a pollen grain that sticks to the stigma of a flower during pollination germinates into a long tube that grows straight and unbranched through the ovary to the ovules, where fertilisation takes place.
From Science Daily ● Apr. 16, 2024
The pollen grain undergoes mitosis, producing a generative cell and a tube cell.
From Textbooks ● Jan. 1, 2015
Each pollen grain contains two cells: one generative cell that will divide into two sperm and a second cell that will become the pollen tube cell.
From Textbooks ● Jan. 1, 2015
When the pollen grain falls upon this sticky stigma its inside wall swells up, just as the bean does when we soak it.
From The Renewal of Life; How and When to Tell the Story to the Young by Margaret Warner Morley
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
