pollen grain

American  

noun

1. a single granule of pollen.

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Etymology

Origin of pollen grain

First recorded in 1825–35

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Example Sentences

See Examples For:

pollen grain

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 tube develops slowly, and the generative cell in the pollen grain divides into two haploid sperm cells by mitosis.

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

That the seed inherits equally from the ovule and the pollen grain is a truth that should be impressed in many ways.

From The Renewal of Life; How and When to Tell the Story to the Young by Margaret Warner Morley

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