Which type of connective tissue acts mainly as energy storage?

Adipose tissue is the type of connective tissue that primarily functions as energy storage. It is composed of adipocytes, or fat cells, which store energy in the form of lipids. Beyond serving as an energy reserve, adipose tissue also plays a crucial role in insulation and cushioning for organs, as well as hormone production, which helps to regulate metabolism and other physiological processes. This multifunctional aspect makes adipose tissue critical for maintaining energy balance in the body.

In contrast, cartilage provides flexible support and cushioning in joints, tendons connect muscles to bones and transmit force, and bone is primarily a structural tissue that offers support and protection to the body while also serving as a reservoir for minerals and housing bone marrow for blood cell production. Each of these tissues has distinct roles that do not focus on energy storage like adipose tissue does.