Choose the mismatch

Options

A. Libriform fiber Simple pits in lignified walls
B. Companion cell-sister cell of albuminous cell
C. Sieve tube element -Unspecialized sieve areas on lateral walls
D. Tyloses- Obstruct the growth of pathogenic fungi

Answer

To solve the question "Choose the mismatch," we will analyze each option provided and determine if they correctly match their descriptions.

### Step-by-Step Solution:

1. **Analyze Option A: Libreform Fibers, Simple Pet and Lignified Wall**
- Libreform fibers, also known as xylem fibers, are indeed characterized by having lignified walls. They are a type of supportive tissue in plants.
- **Conclusion:** This option is a match.

2. **Analyze Option B: Companion Cell, Sister of Albuminous Cell**
- Companion cells are found in the phloem and are closely associated with albuminous cells found in gymnosperms. They share similar functions and structures, hence they are referred to as "sisters."
- **Conclusion:** This option is also a match.

3. **Analyze Option C: C-2 Element, Unspecialized C-Variound Lateral Walls**
- C-2 elements are part of the phloem and are specialized for transport. The statement claims that they have unspecialized lateral walls, which is incorrect. C-variads are actually found on the end plates of the sieve tubes, not on the lateral walls.
- **Conclusion:** This option is a mismatch.

4. **Analyze Option D: Tilosyth, Obstruct the Growth of Pathogenic Fungus**
- Tilosyths are structures in xylem that form due to the overgrowth of parenchyma cells, which can help prevent the growth of pathogenic fungi by blocking their access.
- **Conclusion:** This option is a match.

### Final Answer:
The mismatch is **Option C: C-2 Element, Unspecialized C-Variound Lateral Walls**.

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