Read the following statements carefully -
(A) The lipid component of the plasma membrane mainly consists of phosphoglycerides.
(B) Polar molecules can pass through the lipid bilayer of the plasma membrane, therefore they do not require carrier proteins to facilitate their transport.
(C ) The secondary wall is capable of growth and it is formed on the outer side of the primary wall.
(D) Quasifluid nature of lipid enables the lateral movement of proteins within the overall lipid bilayer of the plasma membrane.
(E) Middle lamella glues the different neighbouring cells together.
How many statements are incorrect?

Options

A. Three
B. Five
C. Four
D. Two

Answer

To determine how many statements are incorrect, let's analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement A**: "The lipid component of the plasma membrane mainly consists of phosphoglycerides."
- **Analysis**: This statement is correct. The primary lipid components of the plasma membrane are indeed phosphoglycerides (phospholipids), which form the lipid bilayer.

2. **Statement B**: "Polar molecules can pass through the lipid bilayer of the plasma membrane, therefore they do not require carrier proteins to facilitate their transport."
- **Analysis**: This statement is incorrect. Polar molecules cannot easily pass through the hydrophobic lipid bilayer of the plasma membrane and typically require carrier proteins or channels to facilitate their transport.

3. **Statement C**: "The secondary wall is capable of growth and it is formed on the outer side of the primary wall."
- **Analysis**: This statement is incorrect. The primary wall is the one that is capable of growth, while the secondary wall is formed on the inner side of the primary wall and is generally not capable of growth.

4. **Statement D**: "Quasifluid nature of lipid enables the lateral movement of proteins within the overall lipid bilayer of the plasma membrane."
- **Analysis**: This statement is correct. The quasifluid nature of the lipid bilayer allows proteins to move laterally within the membrane.

5. **Statement E**: "Middle lamella glues the different neighbouring cells together."
- **Analysis**: This statement is correct. The middle lamella is a layer that cements adjacent plant cells together.

### Summary of Statements:
- Correct Statements: A, D, E
- Incorrect Statements: B, C

### Conclusion:
There are **2 incorrect statements** (B and C).