1.  List some wastes produced in the plant body 

(i) O₂ produced during photosynthesis
(2) CO₂ produced during respiration
(3) Excess water absorbed
(4) Gums, resins and other chemical substances

2.  How do plants get rid of their excretory wastes?

Plants remove their excretory wastes in following ways.
(i)  Photosynthetic waste, oxygen gas is removed through stomata and body surface.
(ii) Respiratory waste carbon dioxide is also remove by simple diffusion through stomata and general body surface
(iii) Excess water is removed by the process of transpiration mainly through stomata
(iv) Plants store metabolic wastes in their dead cells like xylem.
(v) In living tissues, wastes material is sometimes stored in vacuoles.
(vi) Waste material may also be stored in plant parts like leaves, which are periodically shed-off.
(vii) Waste products may be stored in the form of gums and resins in old woody (Xylem) regions 
(viii) Plants also give out some volatile waste materials from roots into the surrounding soil.