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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

Stratified epithelial cells have limited role in secretion. Justify their role in our skin.

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प्रश्न

Stratified epithelial cells have limited role in secretion. Justify their role in our skin.

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उत्तर

The stratified epithelium is made of more than one layer of cells and thus has a limited role in secretion and absorption. Their main function is to provide protection against chemical and mechanical stresses. They cover the dry surface of the skin.

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पाठ 7: Structural Organisation in Animals - Exercises [पृष्ठ ३६]

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एनसीईआरटी एक्झांप्लर Biology Exemplar [English] Class 11
पाठ 7 Structural Organisation in Animals
Exercises | Q 5. | पृष्ठ ३६

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

What is the following and where do you find them in animal body?

Ciliated epithelium


Describe various types of epithelial tissues with the help of labelled diagrams


Distinguish between Simple epithelium and compound epithelium


Based on the following information, identify the three types of epithelial tissue in the figures given below :  

a b c

 

(1) Cuboidal epithelium: It consists of a single layer of cuboidal cells.

(2) Columnar epithelium: It is composed of tall, cylindrical cells with oval nuclei usually placed at the base of the cells.

(3) Ciliated epithelium: It consists of cells being hair-like cilia on their free surface.


Fill in the blank  

Epithelial tissue is made of cells without any ...................... spaces.


Write the name of the following tissue. 

Tissue lining the inner surface of the mouth.


Name the kind of cells found in the following place:

Inner lining of the wind pipe


Epithelial cells with cilia are found in ______ of our body.


Which is not a function of epidermis?


Write true (T) or false (F)

Epithelial cells have a lot of intercellular spaces.


______ epithelium is seen in sweat glands.


Sieve cells have no companion cells. 


Assertion: Materials are exchanged between epithelial and connective tissues by diffusion.
Reason: Blood vessels are absent in epithelial tissue.


Epithelium founds in the lining of stomach and intestine is


The body of sponges does not possess tissue level of organisation though it is made of thousands of cells. Comment.


Write the appropriate type of tissues in column B according to the functions mentioned in column A.

Column A Column B
a. Secretion and absorption i. ______
b. Protective covering ii. ______
c. Linking and supporting framework iii. ______

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