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Cell Wall (Class XI/XII)

Description: Cell wall lignin suberin Cell WallCell Wall: Structure and FunctionBiologyBiology
Number of Questions: 15
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Tags: Cell wall lignin suberin Cell Wall Cell Wall: Structure and Function Biology
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The structure through which the cells coordinate with each other is called

  1. plasmodesmata

  2. endoplasmic reticulum

  3. cell membrane

  4. pili


Correct Option: A
Explanation:

Plasmodesmata are pores in the secondary cell wall.

The deposition of ____________ in cell wall reduces the rate of surface transpiration.

  1. lignin

  2. cutin

  3. pectin

  4. suberin


Correct Option: B
Explanation:

Cutin deposition reduces the rate of surface transpiration.

The impermeability of cork cell wall is due to

  1. lignin

  2. suberin

  3. cutin

  4. pectin


Correct Option: B
Explanation:

The cell wall of cork contains a fatty acid called suberin which makes it impermeable.

Which of the following types of cell walls provides mechanical support to gymnosperms?

  1. Primary

  2. Secondary

  3. Tertiary

  4. Cell coat


Correct Option: C
Explanation:

Tertiary cell wall provides mechanical support to gymnosperms.

Which of the following phenomena is exhibited by cells having cell wall?

  1. Active transport

  2. Crenation

  3. Plasmolysis

  4. Diffusion


Correct Option: C
Explanation:

Plant cells having cell wall show the phenomenon of plasmolysis.

Which organelle gives shape to a cell and protects it from mechanical injury and infection?

  1. Cell coat

  2. Cell membrane

  3. Cell wall

  4. Cytoplasm


Correct Option: C
Explanation:

Cell wall gives shape to a cell and protects it from mechanical injury and infection.

Which of the following cell wall layers develops in young growing cells?

  1. Secondary cell wall

  2. Primary cell wall

  3. Tertiary cell wall

  4. Middle lamella


Correct Option: B
Explanation:

Primary cell wall develops in young plant cells and is capable of growing.

Which of the following is true about the permeability of cell wall?

  1. Cell wall is impermeable.

  2. Cell wall is selectively permeable.

  3. Cell wall is semi-permeable.

  4. Cell wall is permeable.


Correct Option: D
Explanation:

Cell wall is not permeable to macromolecules like starch.

Which of the following polymers constitute(s) bacterial cell wall?

  1. Cellulose

  2. Peptidoglycans

  3. Phospholipids

  4. N-acetyl glucosamine


Correct Option: B
Explanation:

Peptidoglycans constitue the bacterial cell wall.

Which of the following cell wall layers constitutes of Ca, Mg pectate, lignin and proteins?

  1. Primary

  2. Middle lamella

  3. Secondary

  4. Tertiary


Correct Option: B
Explanation:

Middle lamella is composed of Ca, Mg pectate, lignin and proteins.

The absence of _______ causes loosening of cells.

  1. primary cell wall

  2. secondary cell wall

  3. middle lamella

  4. tertiary cell wall


Correct Option: C
Explanation:

Middle lamella holds the cells of tissues together. 

Which of the following cells have cell wall made up of cellulose?

  1. Animal cells

  2. Plant cells

  3. Bacterial cells

  4. Fungal cells


Correct Option: B
Explanation:

Plant cell wall is primarily made up of cellulose.

Which layer of cell wall is common between two adjacent cells?

  1. Primary cell wall

  2. Middle lamella

  3. Secondary cell wall

  4. Tertiary cell wall


Correct Option: B
Explanation:

Middle lamella is a common layer of cell wall between two adjacent cells.

Which of the following cell membrane extensions help in the synthesis of cell wall?

  1. Peroxisomes

  2. Lysosomes

  3. Mesosomes

  4. Ribosomes


Correct Option: C
Explanation:

Mesosomes are extensions of cell membrane which help in the synthesis of cell wall.

Which of the following is a thick and tough structure made up of mucopolysaccharide?

  1. Capsule

  2. Slime

  3. Plant cell wall

  4. Fimbriae


Correct Option: A
Explanation:

Capsule is a thick and tough structure formed of mucopolysaccharide.

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