Starch sheath is found in

Options

A. Sunflower stem
B. Maize stem
C. Mango root
D. Rice root

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Starch Sheath":**
- The starch sheath is a layer composed of specialized cells that store a significant amount of starch grains. This indicates that it plays a role in the storage of carbohydrates.

2. **Location of the Starch Sheath:**
- The starch sheath is located inner to the cortex and outer to the pericycle in plant stems. This positioning helps in identifying where it can be found.

3. **Identifying the Plant Type:**
- The starch sheath is primarily a feature of dicotyledonous (dicot) plants. This is crucial in determining which options may contain the starch sheath.

4. **Evaluating the Options:**
- **Option 1: Sunflower Stem** - Sunflower is a dicot plant, and therefore, it is likely to have a starch sheath.
- **Option 2: Maize Stem** - Maize is a monocot plant, and as discussed, the starch sheath is not a feature of monocots, making this option incorrect.
- **Option 3: Mango Root** - Roots typically do not exhibit a starch sheath, so this option is also incorrect.
- **Option 4: Rice Root** - Similar to mango root, rice roots do not have a starch sheath, making this option incorrect as well.

5. **Conclusion:**
- Based on the analysis, the only correct answer is **Option 1: Sunflower Stem**, as it is a dicot stem where the starch sheath is found.