EVERYDAY SCIENCE

Detailed explanation-1: -By comparing the number and proportion of gills and spores in a drowned person’s lungs, it is sometimes possible to determine where he or she drowned.

Detailed explanation-2: -A forensic botanist must look not only at the different species in an area, but must also calculate the percentages of each species when comparing two locations. 5. Annual rings are formed as a result of differences in color of the lighter springwood and the darker winterwood.

Detailed explanation-3: -Plant evidence can be useful for determining if a death was due to an acci-dent, suicide, or homicide, or what time of year burial may have taken place. In addition, plant evi-dence can be used to determine if a crime scene is a primary or secondary scene and to locate missing bodies.

Detailed explanation-4: -The outer thick wall of pollen grain is called exine and the inner thin wall is called intine. IV. The hard outer layer called the exine is made up of sporopollenin which is one of the most resistant organic materials known.

Detailed explanation-5: -Forensic palynology – the study of pollen and spores to prove or disprove a connection in criminal cases – has been part of the forensic toolkit since 1959 when the analysis of pollen and spores was first practiced in relation to a forensic investigation in Austria.