_____________________ solid waste product of plants containing calcium carbonate crystals.

Waste products of plants

• Carbon dioxide, excess water during respiration, and nitrogenous compounds are the main excretory products in plants.
• The waste product of respiration is carbon dioxide and water vapor.
• The waste product of photosynthesis is oxygen.

The solid waste product of plants that contain calcium carbonate crystals

• Raphides are needle-like structures which is the solid waste product of plants.
• Raphides are found in the idioblast of the plant cells.
• Calcium compounds are accumulated when there is surplus calcium and the waste product of calcium carbonate crystals is formed.