EVERYDAY SCIENCE

Detailed explanation-1: -After it passes through the esophagus, the food moves into the crop where it is stored and then eventually moves into the gizzard. The gizzard uses stones that the earthworm eats to grind the food completely.

Detailed explanation-2: -The food is stored in the crop and then ground up into small digestible pieces in the gizzard. Earthworms need a gizzard because they do not have any teeth. The body absorbs nutrients through the small intestine.

Detailed explanation-3: -Digestive system of the earthworm consists of alimentary canal (mouth, buccal cavity, pharynx, oesophagus, gizzard, stomach, intestine and anus) and digestive glands (pharyngeal gland, gastric epithelium, intestinal epithelium and intestinal caecae). Blood vascular system of earthworm is of closed type.

Detailed explanation-4: -The crop is an important part of an earthworm’s digestive system and functions to store the food that is taken in, similar to a stomach in a human.

Detailed explanation-5: -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.