Question

The tuber of potato is a stem structure because it

• A. contains reserved food
• B. possesses apical bud
• C. does not have root
• D. lacks chlorophyll

Answer 1

Answer: (B)

possesses apical bud

Answer 2

The tuber of a potato is considered a stem structure because it possesses an apical bud. These buds, also known as eyes, have the potential to sprout and grow into new shoots, eventually giving rise to new plants. While other options may partially describe characteristics of potato tubers, none fully justify the function of apical buds correctly:

• Option A: The tuber does indeed contain reserved food, but this characteristic alone is not exclusive to tubers as other parts of the potato plant, such as fruits or roots, can also store food.
• Option C: Contrary to the statement, tubers of potato plants can develop roots, which support the growth of the plant.
• Option D: While it is true that some stems lack chlorophyll, not all stems need to lack it; chlorophyll presence varies depending on the plant species and its environment.

Therefore, in addition to serving multiple purposes, the most significant reason behind the presence of potato tubers is their ability to possess apical buds and potentially grow into new plants.
So, the correct option is (B): possesses apical bud.