B2 1.5 Tissues and organs

Tissues

During the development of multicelluar organisms the cells differentiate. Different cells have different funstions. A tissue is a group of cells with similar structure and function. Animal tissues include:

• muscle tissue, which can contract to bring about movement.
• glandular tissue, to produce substances such as enzymes or hormones
• epithelial tissue, which covers some parts of the body.

Plants tissues include:

• …