Q1 of 386 Page 160

Name the plant tissue found in the husk of coconut and also identify the chemical which is responsible for its stiffness.

Plant tissue in husk of coconut is sclerenchvma fibres.

Reason for stiffness of scrererrchyma is deposition of iig'in in cell walls of its cells.


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20

Why are xylem and phloem called complex tissues? How are they different from one another?

 21

(a) Differentiate between meristematic and permanent tissues in plants.

(b) Define the process of differentiation.


(c) name any two simple and two complex permanent tissues in plants.

 1

Give one way in which it differs from parenchymatous cells

 2

Name the living components common to both the complex permanent tissues found in plants. What is its function?