Which of the following is not a correct match ?

Options

A. Contractile vacuole of Amoeba - Excretion
B. Lysosomal enzymes - Optimally activate at acidic PH
C. Smooth E.R- Synthesis of steroidal hormones
D. Centrioles - Non-membranous organelles found in all eukaryotic cells

Answer

To determine which of the following matches is incorrect, we will analyze each option provided in the question.

1. **Contractile Vacuole of Amoeba - Excretion**:
- The contractile vacuole in amoeba is indeed involved in the excretion of waste products. It helps in osmoregulation by expelling excess water from the cell. This match is correct.

2. **Lysosomal Enzymes - Hydrolytic Enzymes**:
- Lysosomes contain hydrolytic enzymes that are responsible for breaking down waste materials and cellular debris. These enzymes, such as lipases, proteases, and carbohydrases, function optimally at an acidic pH. This match is also correct.

3. **Smooth Endoplasmic Reticulum - Synthesis of Steroidal Hormones**:
- The smooth endoplasmic reticulum (SER) is indeed involved in the synthesis of lipids, including steroidal hormones. This match is correct as well.

4. **Centriole - Present in all Eukaryotic Cells**:
- Centrioles are cylindrical structures found in the centrosome and are primarily involved in cell division. However, they are only present in animal cells and not in plant cells. Therefore, stating that centrioles are present in all eukaryotic cells is incorrect.

Based on the analysis above, the incorrect match is **Centriole - Present in all Eukaryotic Cells**.

### Final Answer:
The incorrect match is **Centriole - Present in all Eukaryotic Cells**.

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