Question

Which of the following are methods by which plants excrete wastes?

• A. Transpiration
• B. Resins and gums
• C. Translocation
• D. Through old leaves that fall off

Answer 1

Answer: (A), (B), (D)

Through old leaves that fall off

• Plants lose water in the process of transpiration and guttation.
• Plants store some waste products in leaves which will fall off.
• Oxygen produced during photosynthesis passes out through the stomata.
• Waste materials can also be stored in old xylem in the form of resin and gum and are then secreted out through the bark.
• Translocation is the process of transport of food from one part of the plant body to another.