Silkworms make silk by spewing a substance called fibroin through small holes in their jaws called spinnerets. The spewed-out substance consists of digested leaves and protein produced by the worm. The silkworm produces up to 1200 silken threads within a 72 hour time period, creating a soft, silver cocoon. Once the cocoon process is complete, silk farmers harvest the threads with steam, and the delicate fibers are spun and woven into silk fabrics.Know More
Silkworms use their salivary glands to produce fibroin, and they create their cocoons by rotating repeatedly for up to 72 hours. Each cocoon produces approximately one kilometer of silk fiber. Silk farmers remove the cocoon with steaming water and carefully unwind the cocoon fibers.
Silkworm farmers harvest silkworm eggs by incubating them until they hatch into caterpillars. The larvae are fed mulberry leaves and lettuce for approximately six weeks. While silkworms feed on a variety of plant life, their favorite meal is mulberry leaves. Silkworm larvae that is fed only mulberry leaves during the feeding process are known to produce the finest silk on the market. During this time, the silkworm eats 50,000 times its weight in plant materials. Once the silkworm reaches a maximum weight and height, it changes color and prepares to spin its cocoon.Learn more about Worms
The common earthworm lives within soil, but it often emerges from the ground at night and after periods of heavy rain. Earthworms are found abundantly all across North America, Europe and western Asia.Full Answer >
A meningeal worm, sometimes also referred to as a brain worm, llama worm or deer worm, is a parasite of the white-tailed deer that can be fatal when contracted by llamas. The meningeal worm causes severe damage to the llamas' central nervous system.Full Answer >
Flatworms feed by extending their mouth parts and sucking the juices from either prey organisms or, when available, animal corpses, as stated by the Northern Virginia Ecological Study database. Flatworms feed on nematodes, rotifers, aquatic worms, soft-bodied animals of all kinds and sometimes members of their own species when other food sources are not available.Full Answer >
An earthworm has five aortic arches, each functioning similarly to a heart. The aortic arches have the purpose of pumping blood through the dorsal and ventral blood vessels. The dorsal blood vessel carries blood to the front of the body, while the ventral vessel carries blood to the back.Full Answer >