How many of the following are the functions of cell
wall?
a) Gives shape to the cells
b) Protects from mechanical damage and infection
(c) Regulates the transport of the molecules across it
(d) Helps in cell to cell interaction
(1) Two
(2) Three
(3) Four (4) One
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3
Answer:
(2) three
Explanation:
(c) option is not valid as cell wall is a dead layer so it is fully permeable to all substances (except pathogens which it hinders from entering by forming barriers) . Hence is unable to regulate the process. 'Cell membrane' has this function.
Hope it helps
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