d)MxQ 2 Which component is the stoge condenser b) M d) P Q ) Q Q e o 3. What doe

Question

d)MxQ 2 Which component is the stoge condenser b) M d) P Q ) Q Q e o 3. What does a drop of immersion oil between 'M' and 'N' accomplish a) Eliminates light scattering as the light column passes through the air, thus improving image resolution b) Provides greater focusing ability through the objective lens, thus improving image resolution. c) Eliminates surface imperfections that may be present on the glass slide, thus improving image improves the depth of focus as the light column passes through the specimen, thus improving image resolution e) None of the obove Questions 4-6 are based on the diagram below 4 This structure is involved in the transfer of genetic material from one cell to another a) V b) W c) X d) Y e) Z 5. This structure alliows the cell to move around within its substrate. a) V b) W c) X d) Y ?ug

Explanation / Answer

3. A

As the light travels through different medium with different refractive indices it is scattered i.e from air to glass and less clear image is seen .

So oil immersion is done because it has refractive index almost same as of glass and thus prevents the refraction of light and hence the column of light will pass through the narrow beam and more clearer image is seen .

4. The genetic material transfer from one cell to other occurs through direct cell to cell contact by the process called conjugation.

As the image is not so clear i think X should be the correct answer.

5. The movement through substrate occurs through the flagella which is the structure Z.

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