Final answer:
The body wall of sea squirts is comprised of a tunic, test, and various muscular tissues.
Step-by-step explanation:
The body wall of sea squirts, also known as tunicates, is made up of several layers of tissues. The outermost layer is called the tunic, which is a tough and protective covering made of a carbohydrate called cellulose. Beneath the tunic, there is a layer of connective tissue called the test that provides structural support to the organism. Inside the test, there are various muscular tissues that enable the sea squirt to contract and move.
In addition to the structural components, the body wall of sea squirts also contains specialized cells and structures. For example, the body wall may have siphons, which are openings that allow water to enter and exit the organism for respiration and feeding. The body wall may also have pigment cells that contribute to the sea squirt's coloration and camouflage. So therefore The body wall of sea squirts is comprised of a tunic, test, and various muscular tissues. Additionally, specialized cells and structures such as siphons and pigment cells are present.