What are the methods used by plants to

solution:
The method used by plants to get rid of excretory products are

(i) The oxygen which is produced during the process of photo-synthesis gets removed through stomata.

(ii) The carbon dioxide which is produced during the process of respiration also gets removed through stomata.

(iii) The excess of water gets removed through transpiration.

(iv) Some other wastes get removed along with dead cells when plant lose some parts such as leaves.

(v) Some waste products are stored in cellular vacuoles.

(vi) Some waste products are stored as resins and gums, especially in old xylem.

(vii) Plants also excrete some waste substances into the soil around them.

(viii) Some waste substances are also eliminated through petals, fruits and seeds.