Cell Wall

Question 1

What is a cell wall?

Answer 1

non living rigid structure called the cell wall is an outer covering for plasma membrane of fungi and plants.

Question 2

List some basic functions of a cell wall?

Answer 2

1. Cell wall not only gives shape to cell but also protects the cell from
   - mechanical damage
   - infection

Question 3

What are the other functions

Answer 3

• helps in cell to cell interaction
  -and provides barrier to undesirable macromolecules

Question 4

Cell Wall in Algae

Answer 4

Cell wall in algae are made of
- glucose
- galactans
- mannans
and minerals like calcium carbonate

Question 5

Cell wall in Plants

Answer 5

It consists of
-cellulose,
-hemi cellulose
-pectin
-proteins

Question 6

What about the cell wall of young plant cell

Answer 6

-the primary cell wall of plant is capable of growth which gradually diminishes
as the cell matures

-and secondary wall is formed on the inner side of cell

Question 7

comment about the The middle Lamella

Answer 7

it is a layer made of calcium pectate which helps in gluing or holding together different neighbouring cells together

the cell wall and middle lamella may be traversed by a plasmodesmata

Question 8

Function of plasmodesmata

Answer 8

helps in connecting the cytoplasm of neighbouring cells.