Annelids-In earthworms, respiration is through the skin, but gills are used to exchange oxygen and and carbon dioxide in other types of annelids. Arthropoda-Some arthropods have gills and some have a tracheal system to obtain oxygen and then get rid of carbon dioxide.nnelids-In earthworms, respiration is through the skin, but gills are used to exchange oxygen and and carbon dioxide in other types of annelids. Arthropoda-Some arthropods have gills and some have a tracheal system to obtain oxygen and then get rid of carbon dioxide.
Cistus, with its many hybrids and cultivars, is commonly encountered as a garden flower. The common name rockrose is applied to the species, a name also shared by the related genera Halimium, Helianthemum and Tuberaria, all in the family Cistaceae. The common name gum cistus is applied to resin-bearing species, especially C. ladanifer.
Rose of Sharon (Hibiscus syriacus) is a beautiful hibiscus that can be grown in many climates, where we enjoy its beauty during the summertime. The flowers of the most common variety are 2 to 3 inches and pink with a cherry-red throat.They are edible and also make excellent cut flowers.ecause it is so popular, Rose of Sharon should be available at nurseries as a bedding plant. Common varieties include Diana, Lady Stanley, Ardens, Lucy, Minerva and Blushing Bride. Some varieties produce white flowers; others can be red, lavender or pink.