Which of the following statements about cell wall are correct ?
(a) Mainly composed of phospholipid
(b) Determine shape of cell
(c) Protects cell from mechanical damage
(d) Protects cell from infection
(e) Present in all eukaryotic cells
(f) Provide barrier to undesirable macromolecules
(g) Quasifluid in nature
(h) Non living rigid structure
(i) May be traversed by plasmodesmata

Options

A. a,c,e,g,i
B. b,d,f,h
C. b,c,d,f,h,i
D. e,g,h,i

Answer

To determine which statements about the cell wall are correct, let's analyze each statement one by one:

1. **(a) Mainly composed of phospholipid**: This statement is **incorrect**. The cell wall is primarily composed of polysaccharides such as cellulose, pectin, and lignin, not phospholipids, which are components of the cell membrane.

2. **(b) Determine shape of cell**: This statement is **correct**. The cell wall provides structural support and determines the shape of the cell, especially in plant cells.

3. **(c) Protects cell from mechanical damage**: This statement is **correct**. The rigidity of the cell wall helps protect the cell from mechanical injuries and stresses.

4. **(d) Protects cell from infection**: This statement is **correct**. The cell wall acts as a barrier that can help protect the cell from pathogens and infections.

5. **(e) Present in all eukaryotic cells**: This statement is **incorrect**. While cell walls are present in plant cells and fungi (which are eukaryotes), they are not found in animal cells, which are also eukaryotic.

6. **(f) Provide barrier to undesirable macromolecules**: This statement is **correct**. The cell wall serves as a barrier to prevent the entry of harmful macromolecules and pathogens.

7. **(g) Quasifluid in nature**: This statement is **incorrect**. The cell wall is a rigid structure and does not exhibit fluidity; this characteristic is associated with the cell membrane.

8. **(h) Non-living rigid structure**: This statement is **correct**. The cell wall is indeed a non-living and rigid structure that provides support and protection.

9. **(i) May be traversed by plasmodesmata**: This statement is **correct**. Plasmodesmata are channels that traverse the cell wall and allow communication and transport between adjacent plant cells.

### Summary of Correct Statements:
- (b) Determine shape of cell
- (c) Protects cell from mechanical damage
- (d) Protects cell from infection
- (f) Provide barrier to undesirable macromolecules
- (h) Non-living rigid structure
- (i) May be traversed by plasmodesmata

### Final Answer:
The correct statements about the cell wall are: **(b), (c), (d), (f), (h), and (i)**.