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
Long, thin black worms are known as horsehair worms, and as the name implies, they resemble hair from the tail of a horse. Horsehair worms are parasitic and are usually found in ponds, pools, water troughs and other watery places.Full Answer >
The typhlosole in earthworms increases the surface area of the intestine for efficient secretion and absorption during digestion. It is named for the Greek word for "blind pipe," and the typhlosole can be defined as an extra flap of tissue or an infolding along the inner wall of the intestine. However, the typhlosole varies according to the family of earthworm.Full Answer >
The small brown worms that are found inside houses are often millipedes. They are especially fond of basements and may live indoors year-round, although they are most common from the spring through the fall.Full Answer >
Nearly all animals referred to as worms are invertebrates, including earthworms, and by definition, invertebrates do not have bones. Exceptions include worm lizards, such as the Caecilians and Anguis lizards, which look like worms but have reptilian skeletons.Full Answer >