Which tissue is primarily composed of cellulose and lignin, providing structural support for plants?

The tissue primarily composed of cellulose and lignin that provides structural support for plants is known as structural tissue. This type of tissue, particularly found in the form of sclerenchyma and collenchyma, plays a critical role in maintaining the shape and integrity of plant bodies. Cellulose provides tensile strength, while lignin adds rigidity and resistance to decay, which is essential for supporting taller plants and withstanding environmental stress.

Vascular tissue, while vital for the transport of substances within the plant, is not primarily focused on structural support. Meristematic tissue consists of undifferentiated cells capable of division, allowing for growth and repair, but it doesn't provide structural reinforcement in itself. Ground tissue, which includes a variety of cell types serving functions such as photosynthesis, storage, and support, is broader in function and does not specifically refer to the structural components highlighted by cellulose and lignin.