justify the following statements on the basis of external features only.

1. potato is a modified stem and sweet potato is a root

2. leaf of hibiscus is simple and leaf of rose is compound

Ans1) Potato is modified stem as it shows the presence of  the usual parts of stem such as nodes and  buds. Sweet potato is a modified root as it does not show show the presence nodes and buds found on potato.
Ans 2) Leaf of Hibiscus is simple by the presence of single lamina.
Leaf of rose is compound due to presence of divided lamina . They have pinnately compound leaf, leaflets of which grow alternately.
 

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