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Pollen and Spores
Transcript of Pollen and Spores
period 4 Works Cited Fun Facts: Diagram of a flower Different types of Pollen Forensic Biology Pollen The Differences Pollen Definitions:
Pollen "Fingerprint"-the number and type of pollen grains found in a geographic area at a particular time of year
Pollen Grain- a reproductive structure that contains the male gametes of seed plants
Pollination-the transfer of pollen from the male part to the female part of a seed plant Consider you are at a murder scene, where the victim contains pollen on the soles of their shoes but they were found in the trunk of a car in a body bag. Obviously this scene was not the scene of the accident however how would we detect the scene with only the pollen as a clue?
Well each pollen is distinct to a certain type of plant, therefore limiting the range of the original scene. Cattleyas are only found in Columbia, because that is the only environment it can continue to live in. Pollen can tell a lot about where a person or object has been, because certain regions of the world contain certain characteristics, such as weather necessary to sustain that life style. For example, many flowers cannot sustain life in desserts however the cactus can survive there. Some will have a distinctive collection of pollen species, and can change with the seasons. An example is when pollen was used to catch a burglar who brushed against a Hypericum bush during a crime and has been proposed as an additive for bullets to enable tracking them. The stamen and anther are the parts that produce pollen and spur the sexual process, thus if you have that part of the flower it will be easier to detect a match to a crime scene. As you can see, the individual pollen grains can very, and that is how a palynologist can tell the difference in flowers soley based on their pollen Pollen is hard to destroy
There are thousands of different types of pollen
Pollen is like fingerprints in away because each species has different types of pollen.
Most pollen is hidden from the eye, you need a magnifying glass to identify it.
Scientists use scanning electron microscopes therefore it is easier for them to identify the different types. Bryant, Vaughn M., Jr. "Crime & Clues." Forensic Palynology in the United States. Texas A&M University, n.d. Web. 10 Dec. 2012.
Hoen, Peter. "Glossary of Pollen and Spore Terminology." Laboratory of Palaeobotany and Palynology. N.p., 16 Apr. 1999. Web. 05 Dec. 2012.
McCarty, Pual. "Pollen and Spore Examination - McCarty-Puhl Forensic Science." McCarty-Puhl Forensic Science. N.p., n.d. Web. 10 Dec. 2012. Lilies are abundant in various locations If the flowers were found on a victim then the types of pollen of the flowers would lower the possibilities of the original crime scene. Cattleya flowers have fused the male and female organs together and that they typically drop pollen under the flower to rid any extras. Whereas Lilies have more of the natural process. There organs look different as well, seen in the photos up above. Today you will be taking a journey as a palynologist