1 The study included the most common STDs: HPV, chlamydia, herpes simplex virus, and trichomoniasis. 2  There are approximately 15 million new cases of sexually transmitted infection each year in the United States, and 340 million worldwide.  The majority of STI's are asymptomatic (no symptoms).
Monocots have a trimerous flower, or a flower with parts in multiples of three. You can simply count the petals of a flower, and if you can divide the total number by three, you probably have a monocot. As you can see in this image of a lily, there are six petals in total, a multiple of three. Lilies are a type of monocot. In fact, many big, showy flowers like lilies, daffodils, bluebells, irises, orchids, and tulips are monocots. But flowers aren't the only way to recognize a monocot.
All monocotyledons have flower parts in multiples of three. Another example of a monocotyledon plant is the spiderwort. If you examine this plant, you will see flower parts in multiples of three and veins inside of the leaves that run parallel to one another.