How does leaves of plants help in excretion ? (CCE 2016)
Waste materials produced in plant cells are stored ’in their vacuoles. In leaves, the waste materials are
- Stored in vacuoles of mesophyll and epidermal cells,
- Oxalic acid is crystallised as calcium oxalate.
- Nitrogenous wastes are changed into alkaloids
- Vaste aromatic compounds are changed into tannins. As the old leaves fall, the waste materials are also removed from the plant.