Question

Tube like alimentary canal is found in(a) Hydra (b) Earth worm(c) Starfish (d) Ascaris

Answer 1

Answer.

Tube like alimentary canal is found in Earthworm.

Answer 2

The tubelike alimentary canal is found in earthworm.

Answer: Option (b)

Explanation:

The 'alimentary canal' consists of the mouth, pharynx, oesophagus, stomach, and anus. In earthworms, it is a long and straight tube-like structure starting from the first segment and ending at the last segment of the organism’s body.

The food taken in through the mouth moves to the buccal cavity, the muscular pharynx, the oesophagus, and then to the muscular gizzard where the grinding of food occurs. It then enters the stomach where the humic acid is neutralized. The intestine that follows is responsible for absorption. What remains is 'thrown out' through the anus.