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 cellulose in plants, chitin in fungi, and peptidoglycan in bacteria. Phospholipids are mainly found in cell membranes, not cell walls.

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

3. **(c) Protects cell from mechanical damage**: This statement is correct. The cell wall acts as a protective barrier against mechanical damage.

4. **(d) Protects cell from infection**: This statement is correct. The cell wall helps to protect the cell from pathogens and infections.

5. **(e) Present in all eukaryotic cells**: This statement is incorrect. The cell wall is present in plant cells and fungi, but animal cells do not have a cell wall.

6. **(f) Provide barrier to undesirable macromolecules**: This statement is correct. The cell wall acts as a barrier to larger macromolecules, preventing them from entering the cell.

7. **(g) Quasifluid in nature**: This statement is incorrect. The cell wall is a rigid structure, not quasifluid. Quasifluid properties are 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.

9. **(i) May be traversed by plasmodesmata**: This statement is correct. Plasmodesmata are channels that traverse the cell wall, allowing for 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)**.