(i) The plants produce carbon dioxide as a waste product during respiration and oxygen as a waste product during photosynthesis. The plants get rid of gaseous waste products through stomata in their leaves and lenticels in stems.
(ii) The plants store some of the solid and liquid wastes in their body parts such as leaves, bark and fruits.
The plants get rid of stored solid and liquid waste by the shedding of leaves, peeling of bark and felling of fruits.
(iii) The plants get rid of their waste by secreting in the form of gums and resins. The plants also secrete some waste substances into the soil around them.