Which of the following statement is not true?

Options

A. In plant outer layer in cell wall and in animal cell membrane
B. Dence membrane bound nucleus and semifluid matrix cytoplasm is present in eukaryote cell only
C. Cytoplasm is the main area of cellular activities in plant and animal cells
D. All are true

Answer

To solve the question, we need to analyze each of the four statements provided and determine which one is not true.

### Step-by-Step Solution:

1. **Analyze Option 1**:
- The statement claims that the outer layer of a plant cell is the cell wall, while in animal cells, it is the cell membrane.
- **Truth Check**: This statement is true. Plant cells have a cell wall as their outermost layer, while animal cells have a cell membrane.

2. **Analyze Option 2**:
- The statement mentions that a dense membrane-bound nucleus and semi-fluid matrix (cytoplasm) are present only in eukaryotic cells.
- **Truth Check**: This statement is partially true. While the membrane-bound nucleus is indeed only found in eukaryotic cells, cytoplasm is present in both prokaryotic and eukaryotic cells. Therefore, this statement is misleading and not entirely true.

3. **Analyze Option 3**:
- The statement asserts that cytoplasm is the main area of cellular activity in both plant and animal cells.
- **Truth Check**: This statement is true. The cytoplasm contains organelles and is where many cellular processes occur.

4. **Analyze Option 4**:
- This option states that all previous statements are true.
- **Truth Check**: Since we found that Option 2 is not entirely true, this option is also false.

### Conclusion:
The statement that is not true is **Option 2**, as it incorrectly implies that cytoplasm is exclusive to eukaryotic cells.

### Final Answer:
**Option 2** is the statement that is not true.

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