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Read each of the following statements ca...

Read each of the following statements carefully and choose the one that is true for the cell wall.

A

The function of the middle lamella is to hold different neighouring cells together.

B

The cell wall is only known to provide shape and protection to the plant cell from infections.

C

The primary wall disintegrates as the cell matures and the secondary wall is capable of growth.

D

The algal cell wall is made up of cellulose , hemicellulose, pectins and proteins.

Text Solution

AI Generated Solution

The correct Answer is:
To determine which statement is true for the cell wall, we will analyze each of the given statements one by one. ### Step-by-Step Solution: 1. **Analyze the First Statement**: - The statement claims that the function of the middle lamella is to hold different neighboring cells together. - The middle lamella is indeed a layer that exists between the cell walls of adjacent plant cells, primarily composed of pectins. Its main function is to adhere cells together, providing structural integrity to plant tissues. - **Conclusion**: This statement is **true**. 2. **Analyze the Second Statement**: - This statement asserts that the cell wall is only known to provide shape and protection to the plant cell from infections. - While the cell wall does provide shape and protection, it also has other functions, such as providing tensile strength and maintaining turgor pressure within the cell. - The use of the word "only" makes this statement misleading. - **Conclusion**: This statement is **false**. 3. **Analyze the Third Statement**: - The statement indicates that the primary cell wall disintegrates as the cell matures and that the secondary cell wall is capable of growth. - It is true that the primary cell wall may disintegrate as the cell matures. However, the secondary cell wall does not grow; it is formed through deposition of materials after the cell has matured. - **Conclusion**: This statement is **false**. 4. **Analyze the Fourth Statement**: - This statement claims that the algal cell wall is made up of cellulose, pectins, and proteins. - While cellulose and pectins are indeed components of algal cell walls, proteins are not typically a component of algal cell walls. Instead, they are primarily composed of carbohydrates. - **Conclusion**: This statement is **false**. ### Final Conclusion: After analyzing all the statements, the only true statement regarding the cell wall is the **first statement**: "The function of the middle lamella is to hold different neighboring cells together."
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