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
Micrograph C shows a blowup of a pollen grain, which is oval with two lobes and resembles Mickey Mouse.
From Textbooks ● Jan. 1, 2015
The mature pollen grain is composed of two cells: the pollen tube cell and the generative cell, which is inside the tube cell.
From Textbooks ● Jan. 1, 2015
Pollen was assumed to have germinated if the length of the pollen tube exceeded the diameter of the pollen grain.
From Northern Nut Growers Association Thirty-Fourth Annual Report 1943 by Northern Nut Growers Association
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