Which one of the following plants is primarily cultivated for its stem as a food source?

Correct Option

The correct option is

Sugarcane

Explanation

In angiosperms, food is often stored in modified vegetative parts such as roots, stems, or leaves, or in reproductive parts like fruits and seeds. Identifying the edible part requires distinguishing between these botanical structures based on their origin and morphological features (e.g., presence of nodes and internodes for stems).

Option Analysis

• Carrot: Incorrect. The carrot (Daucus carota) is a modified taproot. It is conical in shape and serves as a storage organ for food reserves, but it is botanically a root, not a stem.
• Sugarcane: Correct. Sugarcane (Saccharum officinarum) is a tall perennial grass cultivated primarily for its stem. The stem stores high concentrations of sucrose in its internodes. It possesses distinct nodes and internodes, which are defining characteristics of a stem.
• Spinach: Incorrect. Spinach (Spinacia oleracea) is a leafy vegetable. It is cultivated for its edible leaves, which are rich in vitamins and minerals.
• Tomato: Incorrect. The tomato (Solanum lycopersicum) is botanically a fruit (specifically a berry). It develops from the fertilized ovary of a flower and contains seeds.

Key Takeaway

Sugarcane is cultivated for its stem (rich in sugar), whereas carrots are modified roots, spinach consists of edible leaves, and tomatoes are botanical fruits.