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Do Pine Trees Reproduce Asexually?

By John Brennan ; Updated July 21, 2017
Pine trees reproduce sexually.

Pine trees and other conifers are members of a group of plants collectively called gymnosperms, which translates as "naked seeds." Like other gymnosperms, pine trees reproduce by sexual reproduction.

Features

Pine trees have both male cones called pollen cones and female, or ovulate cones. The pollen cones shed pollen grains into the wind, which carries the tiny grains to ovulate cones, where they will germinate.

Function

Once an ovule in a female cone has been pollinated, the megasporocyte hidden inside will begin to divide and develop into a gametophyte and eggs. Only once the female gametophytes are fully developed will the sperm from the pollen grain fertilize the eggs inside, at which point the ovule develops into a seed. The seeds are dispersed when the scales of the pinecone separate.

Considerations

The pollen and seed-bearing cones of a pine tree are analogous to the sexual organs of a flower. Even though the life cycle of a gymnosperm and a flowering plant are very different, both types reproduce sexually through the fusion of haploid gametes.

 

About the Author

 

Based in San Diego, John Brennan has been writing about science and the environment since 2006. His articles have appeared in "Plenty," "San Diego Reader," "Santa Barbara Independent" and "East Bay Monthly." Brennan holds a Bachelor of Science in biology from the University of California, San Diego.