(ii) Rhizomes: These are modified stems with stored material to withstand adverse conditions. Once they are getting favorable condition, they give rise to shoot and root at the base. Ex. Typha, Canna, Ginger, Turmeric, Lotus etc.  

(iii) Corms: These are highly condensed and specialized stem with many buds. They can be abe to withstand unfavorable conditions. Ex. Banna, Crocus, Gladiolus etc.

(iv) Bulbs: This gives new plant when sown in soil. Ex. Onion, garlic, Lilies etc.

(v) Tubers: These are underground modified stems with several buds. For ex. Potato has several eyes which grows into new plant when planted with a portion of the swollen tuber. It is a common mode of propogation in the case of potato (Figure 19.2).

 

Figure 19.2: Different examples of vegetative reproducing by shoots.