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.
Economically, monocots are perhaps the most important organisms on earth. Our four most important foods -- corn, rice, wheat, and barley -- all come from monocots. Bamboo and palms are a primary source of building materials and fibers in many tropical countries.Sugar cane, pineapples, dates, bananas, and many of our familiar tropical fruits also come from monocots.he Monocotyledonae comprise one-quarter of all flowering plant species. They include some of the largest and most familiar groups of plants, including lilies, orchids, agaves, palms, and grasses.