Corm is

A

Horizontal underground stem

B

Unbranched compressed spherical verical underground stem

C

Horizontal above ground stem

D

Spherical above ground branched stem

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Identify the Structure**: The question asks about "corn." We need to determine what corn is in botanical terms. Corn is a modified stem. 2. **Analyze the Characteristics**: Corn has specific characteristics such as nodes and internodes. These features are typical of stems, which supports the idea that corn is indeed a modified stem. 3. **Determine the Location**: Corn is found underground, which is an important detail. This indicates that it is an underground structure. 4. **Assess the Orientation**: The corn structure is positioned vertically underground. This means it grows in a vertical direction beneath the soil. 5. **Eliminate Incorrect Options**: Based on the information gathered: - Horizontal underground stem: Incorrect - Horizontal above ground stem: Incorrect - Spherical above ground stem: Incorrect 6. **Identify the Correct Option**: The remaining option is "unbranched compressed spherical vertical underground stem." This aligns with the characteristics of corn. 7. **Explain the Structure**: Corn is a highly compressed structure due to the presence of solid tissues inside. This compression allows it to serve as a storage organ, primarily for starch. 8. **Provide an Example**: An example of corn is the Chinese water chestnut, which is spherical in shape and serves the function of storage. 9. **Conclusion**: Therefore, the correct definition of corn is "unbranched compressed spherical vertical underground stem." ---
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