Q5 of 17 Page 24

Deekshith said that “we can’t see cells with unaided eye”. Is the statement true or false? Explain.

The following statements stated by Deekshit are true. The is because the cells are microscopic in nature and are very Usmalland the human eyes do not have the resolution power nor the magnification ability to see the cells that lie in the range of 100μm and the naked human eyes do not have the ability to view the cells in this range thus we need help of a microscope to see these cells.


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3

Distinguish between unicellular and multi cellular organisms?

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How will you prepare slide without drying quickly?

 6

Correct the statement and if necessary rewrite.

a) The cell wall is essential in plant cells.


b) The nucleus controls cell activity


c) Unicellular organisms perform all life processes like respiration, excretion, growth,


and reproduction.


d) To observe nucleus and organelles clearly, staining is not necessary.

 7

Describe the structure of the nucleus.