Plants Excretion

4. A metabolic process in which cells break down glucose to release energy. Carbon dioxide (CO₂) is released as a waste during respiration in plants.
7. Non-living plant cells that do not carry out metabolic activities. Plants use these to store wastes safely, as these cells cannot be harmed by toxic substances.
9. The release of waste substances from the roots into the surrounding soil. Some plants excrete unwanted substances directly into the soil through their root systems.
10. The natural process by which leaves fall off from a plant. Waste stored in leaves is removed from the plant body when they fall.

1. The loss of excess water in the form of water vapour from aerial parts of plants, mainly through stomata. It helps in excretion of extra water from the plant body.
2. Fluid-filled sacs within plant cells that store water, nutrients, and waste products. Many plant waste substances are stored in these vacuoles.
3. The process by which green plants use sunlight to prepare food from carbon dioxide and water. Oxygen is released as a waste product during this process.
5. The process by which waste products of metabolism are removed from the body. In plants, excretion occurs without a specialized system and uses different passive strategies.
6. Thick, sticky substances secreted by some plants, especially in older tissues. These are waste products stored mainly in old xylem tissue.
8. The older, non-functional part of xylem tissue. Plants store waste products like resins and gums here.