Q6 of 386 Page 161



(a) Identify figures A and B.


(b) Which is called tesselated and payement epitheliurn?


(c) Which one lines the gastrointestinal tract and epiglottis ?


(d) Which one allows diffusion of substances ?

(a) Figure A - squamous epithelium;

Figure B - columnar epithelium.


(b) Squamous epithelium is also known as tesselated epithelium or pavement epithelium.


(c) Simple columnar epithelium lines the gastrointestinal tract and epiglottis.


(d) Simple squamous epithelial cells are extremely thin and flat which allows diffusion of substances through it.


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4




(a) Identify Figure A, B and C


(b) Which one of them has heavy deposition of lignin?


(c) Which one of them provides both mechanical strength as well as flexibility?


(d) Which one of them can be modified to form air cavities in awuatic plants?


(e) Which one of them is commercially exploited to obtain Hemp and Jute?

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(a) Identify the figure. What is its function

(b) Label V and W


(c) Label X, Y and Z


(d) W loses its nucleus in the mature state, still it remains alive. Explain how


 7


(a) Identify figures A and B.


(b) Label X, Y and Z.


(c) Which one act as impulse booster?


(d) Which one is under control our will?

 8

(a) Identify the figure

(b) Label W, X, Y and Z


(c) What is chemical composition of material of the figure


(d) What of the function of X?