Final answer:
Dietary fibers with high water-holding capacity form gels and have functions like water transport, mineral transport, support, and protection.
Step-by-step explanation:
High water-holding capacity dietary fibers form gels, and their functions include:
- Transport of water: These fibers absorb water and help in maintaining hydration.
- Transport of minerals: Some fibers can bind to minerals and assist in their absorption.
- Support: Dietary fibers provide structure and support to plants, aiding in their growth.
- Protection: Fiber-rich foods can protect against certain diseases, such as colon cancer.
For example, soluble fibers can absorb water to form a gel-like substance, which contributes to their functions. Good sources of soluble fiber include oats, peas, beans, and apples.