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Question


(i) (a) is made of single thin layer of flattened cells with regular boundaries.
(ii) (b) is commanly found in ducts of glands & nephrons.
(iii) (a) is found in walls of blood vessels and air sacs of heart and are involved in a function like diffusion boundaries
(iv) Both (a) & (b) are included under simple
epithelium.

Choose the option with correct statement

A
i & iii
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B
ii, iii & iv
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C
ii & iv
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D
i, ii & iii
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Solution

The correct option is B ii, iii & iv
The sketch A represents the squamous epithelium The squamous epithelium is made of a single thin layer of Flattened cells with irregular boundaries. They are found in the walls of blood vessels and air sacs of lungs and are involved in functions like forming a diffusion boundary.
The sketch B represents the cuboidal epithelium. The cuboidal epithelium is composed of a single layer of cube-like cells. This is commonly found in ducts of glands and tubular parts of nephrons in kidneys and i ts main functi ons are secretion and absorption.
They are both types of simple epithelium.

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