How do plants get rid of their excretory products?

Plants produce a number of waste products and use different mechanisms to get rid of them. Excess water is eliminated by transpiration and guttation. Oxygen (a by-product of photosynthesis) and carbon dioxide (produced during respiration) moves out through stomata. Some waste products are stored in plant parts like leaves that later fall off. Plants also excrete some waste products into the surrounding soil. Certain wastes are accumulated as resins or gums in old xylem tissue. All these methods help the plants to get rid of their excretory products.