Cell Wall

Q.

Give an example of the syncytium.

Q.

What are the components of the cytoskeleton?

Q.

Where does middle lamella occur?

1. Outer to secondary wall

2. Inner to the primary wall

3. Outer to the primary wall

4. Inner to secondary wall

Q. Identify from the following the different layers of the cell wall.

1. Middle lamella and primary cell wall
2. Primary and secondary cell wall
3. Middle lamella, primary cell wall and secondary cell wall
4. Middle lamella and secondary cell wall

Q.

Plasmodesmata are:

1. Lignified cemented layers between cells

2. Connections between adjacent cells

3. Membranes connecting the nucleus with the plasmalemma

4. Locomotory structures

Q. Select the correct order of the layers of the plant cell walls going from inside to outside

1. Secondary wall - Primary wall - Middle lamella
2. Secondary wall - Middle lamella - Primary wall
3. Primary wall - Middle lamella - Secondary wall
4. Middle lamella - Secondary wall - Primary wall

Q. Where is the middle lamella found in a cell?

1. Inner to primary cell wall
2. Inner to secondary cell wall
3. Outer to secondary cell wall
4. Outer to primary cell wall

Q.

Plasmodesmata are located in narrow areas of ___.

1. Cell walls

2. Protoplasm

3. Cellulose

4. Nuclei

Q. The cell wall shows

1. impermeability
2. semipermeability
3. differential permeability
4. freely permeability

Q.

Match the following layers of the cell wall with their components:

Column I (Layer) Column II (Component)

i). Cellulose a. Middle lamella

ii). Pectin b. Secondary cell wall

iii). Lignin c. Primary cell wall

1. i).$\Rightarrow$ a., ii). $\Rightarrow$ c., iii). $\Rightarrow$ b

2. i).$\Rightarrow$ c., ii). $\Rightarrow$ a., iii). $\Rightarrow$ b

3. i).$\Rightarrow$ c., ii). $\Rightarrow$ b., iii). $\Rightarrow$ a

4. i).$\Rightarrow$ b., ii). $\Rightarrow$ c., iii). $\Rightarrow$ a

Q. Which of the following is a characteristic feature of chrysophytes?

1. They have a protein-rich layer called pellicle.
2. They have an indestructible wall layer deposited with silica.
3. They are commonly called dinoflagellates.
4. They are saprophytic protists.

Q. Middle lamella is composed of

1. carbohydrate
2. calcium pectate
3. protein
4. peptidoglycan

Q. Match the organism to their cell wall composition.

1. Pectin
2. Cellulose
3. Chitin
4. Lignin

Q. The major significance of cell wall in a plant is ___(i)___and even in ___(ii)___ to reach other cells through special openings called ___(iii)___.

1. (i) Shape, (ii) Communication, (iii)Desmotubules
2. (i) Protection, (ii) Transport, (iii) Plasmodesmata
3. (i) Transport, (ii) Plasmodesmata, (iii)Protection
4. (i) Communication, (ii) Desmotubules, (iii)Shape

Q. holds cells together in an animal tissue.

1. Intracellular matrix
2. Plasmodesmata
3. Extracellular matrix
4. Desmosomes

Q. connects cytoplasm of neighboring cells.

1. Fimbriaea
2. Pili
3. Plasmodesmata
4. Mesosomes

Q. Middle lamella is composed mainly of:

1. Phosphoglycerides
2. Hemicellulose
3. Muramic acid
4. Calcium pectate