Yellow Crookneck Squash This is a slightly different cultivar from the straightneck yellow squash, which causes the neck to curve and the skin to get bumpy. This squash tends to be slightly more dense than its cousins, so it can stand up to a bit longer steam, braise, etc.
Their skin must remain moist for them to breathe. Like us, they still need to take in oxygen and expel carbon dioxide. However because they don't have lungs, this process happens though their skin. It's not uncommon to see worms coming to the soil surface after saturating rains. Some hold the view that they suffocate in water saturated soil because there isn't enough oxygen. However worms can survive for some time in water.
Three types of worms with different body types will be explored in this lesson: 1  Flatworms, which have ribbon-like bodies with no body cavity. 2  Roundworms, which have a body cavity but no segments. 3  Segmented worms, which have both a body cavity and segmented bodies.haracteristics of Flatworms. There are specific differences between the flatworms and the roundworms. 1  Unlike the flatworms, the roundworms have a body cavity with internal organs. 2  A roundworm has a complete digestive system, which includes both a mouth and an anus.