Insects do not have lungs, nor do they transport oxygen through a circulatory system in the manner that humans do. Because of the unique anatomy of a pillbug, they do not urinate, and instead, pass it as a gas through their bodies. All have rigid, segmented exoskeletons, two pairs of antennae, seven pairs of jointed limbs on the thorax, and five pairs of branching appendages on the abdomen that are used in respiration.Females brood their young in a pouch under their thorax. The outermost layer of plant stems in dicotyledons consists of epidermal cells and guard cells that surround openings call stomata. Specialized structures • Structures specialized for gas exchange include: ... animals but not in land animals? The stomata allow gas exchange. How can these organisms survive on land with gills? One group of land animals that have gills is the Isopods (“pill bugs” and “sow bugs Instead, the insect respiratory system relies on a simple gas exchange that bathes the insect's body in oxygen and expels the carbon dioxide waste. •One group of land animals that have gills is the Isopods (“pill bugs” and “sow bugs”). Those species of isopods that live in the oceans are able to do so by using their pleopods to 'breathe' by gas exchange. Those that live on land have developed their pleopods to include air sacs called “pseudotrachea” that function as gas exchange organs that don't need to be fully submerged in water . Sometimes kids call them rollie-pollies. When threatened, pill bugs roll into a tight ball for protection, but sow bugs run or remain still, appearing to be dead. Isopods live in the sea, in fresh water, or on land. IV: Environment (dark, acidic, basic, noisy, etc.) Students designed their own experiment to determine which factors affect pill bug behavior and taxis. Isopoda is an order of crustaceans that includes woodlice and their relatives. ... and shrimp—breathe with gills. Pill Bug Facts for Kids. Their gills must remain moist to allow for gas exchange. Pill bug shells look like armor and they are known for their ability to roll into a ball. Those that live on land have developed their pleopods to include air sacs called “pseudotrachea” that function as Sow Bugs and Pill Bugs. AP Biology Investigation 12: Fruit Fly Behavior (Substituted old pill bug lab) Overview: Pill bugs are observed in a choice chamber (one side is moist the other is dry). By Susan Jones Pill bugs and Sow Bugs of the Order Arthropoda (arthropod means segmented body and jointed appendages), Class Crustacea, Order Isopoda (isos meaning equal and podes meaning feet), and have a hard armored exoskeleton and jointed limbs. https://www.coursehero.com/file/69799237/Pill-Bug-Lab-Report-Tu Within the United States, there are 12 known species of pillbugs found within Northern and Central United States. Specialized structures Structures specialized for gas exchange include: gills (aquatic animals) spiracles (terrestrial insects) lungs (most terrestrial vertebrates) Thinking question: Why are gills so widely seen in aquatic animals but not in land animals? The epidermal cells are usually covered with a waterproof layer that provides protection from injury and water loss. Both creatures are nocturnal, and each has seven pairs of legs at maturity. Most pill bugs live for … The primary functions include reproduction, gas exchange and excretion. If you plan to use the isopods within a few days, no further care is needed.