CBSE Class 9 Answered

Caecum, colon and rectum are parts of the large intestine.

Rectum is the terminal section of the alimentary canal, from the sigmoid flexure to the anus.

The caecum is a pouch connected to the ascending colon of the large intestine and the ileum. It is separated from the ileum by the ileocecal valve and is considered to be the beginning of the large intestine.

Colon is the part of the large intestine between the caecum and the rectum. It extracts moisture from food residues before they are excreted.