Question

In earthworm, skeletal like function is performed by
A. Coelomic fluid
B. Alimentary canal fluid with flood
C. Typhlosole
D. None of the above

Answer 1

Hint:- A earthworm is an earthly invertebrate that has a place with the request of Opisthopora. They display a cylinder inside an a-tube body plan, are remotely divided with comparing inner division, and typically have seats on all segments.

Complete Answer:- An adult earthworm nightcrawler builds up a belt-molded glandular expanding, called the clitellum, which covers a few sections toward the forward portion of the creature. This is essential for the conceptual framework and produces egg cases. The back is most regularly round and hollow like the remainder of the body, yet relying upon the species, it might likewise be quadrangular, octagonal, trapezoidal, or straightened. The last fragment is known as the periproct; the worm's butt, a short vertical cut, is found on this portion. The outside of an individual fragment is a flimsy fingernail skin over the skin, regularly pigmented red to brown, which has particular cells that emit bodily fluid over the fingernail skin to keep the body clammy and ease development through the dirt. Under the skin is a layer of nerve tissue, and two layers of muscles—a meager external layer of round muscle, and a much thicker internal layer of longitudinal muscle. Inside the muscle layer is a liquid-filled chamber considered a coelom that by its pressurization gives structure to the worm's boneless body.

Note:- Numerous earthworms can launch coelomic fluid through pores in the back because of stress; the Australian Didymogaster sylvaticus (known as the "blue squirter worm") can spurt liquid as high as $30$ cm
($12$ in)