NEET BIOLOGY

Detailed explanation-1: -The gizzard is an organ of the digestive system that uses stones swallowed by the earthworm to grind up food and begin the digestion process. The stones within the gizzard function similar to teeth in humans and will break food down into smaller pieces to aid in digestion.

Detailed explanation-2: -The gizzard is a thick muscular organ found in earthworms. It is found in the 8th segment of the earthworm. Gizzard is a part of the digestive system along with the pharynx, the esophagus, the crop, the intestine, etc. Gizzard is formed when the esophagus expands and modifies into a large, distinct, muscular organ.

Detailed explanation-3: -Gizzard. Earthworms do not have teeth, so they use the strong muscles of the gizzard (and grains of sand and soil) to grind up their food.

Detailed explanation-4: -They have five paired organs that act like hearts to pump their blood through large blood vessels. They have a brain and nerve cord. They have reproductive organs and waste-removal organs. Well-developed muscles let the worms crawl through the soil or on top of the ground.

Detailed explanation-5: -An earthworm has a closed circulatory system that uses vessels to send blood through its body. There are five aortic arches throughout his body that serve as pumps. The dorsal vessels take blood from the back of his body to the front, and the ventral vessels take blood the other direction, from front to back.