Michigan Test for Teacher Certification (MTTC) Secondary Integrated Science Practice test

Which plant tissue is known for storing food and water?

1. Endodermis

2. Cortex

3. Cuticle

4. Epidermis

The correct answer is: Cortex

The cortex is a type of plant tissue primarily located between the outer layer of the plant stem or root and the inner vascular tissues. Its main functions include the storage of food and water. This tissue consists of loosely packed cells that allow for the diffusion of gases and nutrients, making it ideal for storage purposes. The parenchyma cells within the cortex can store carbohydrates, starch, and other nutrients beneficial for the plant's growth and survival. In contrast, the endodermis serves as a selective barrier regulating the flow of water and nutrients into the vascular system, but it is not primarily a storage tissue. The cuticle is a protective layer that reduces water loss, and while it plays a vital role in plant physiology, it does not store nutrients. The epidermis is the outer protective layer of the plant that serves as a barrier to pathogens and water loss but does not have a function related to storage. Thus, the cortex's role as a storage tissue makes it the correct answer.