Cell size, shape and number — task. Science CBSE, Class 9.

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Choose the correct sentence:

1.

White blood cell is a smaller cell
White blood cells have a single nuclei
White blood cells have more than one nuclei
White blood cell is a larger cell

2.

The root hair cells have prolonged areas which also help to increase surface area to volume ratio.
The root hair cells have shortened areas which also help to decrease surface area to volume ratio.

3.

In our human body, 1 million cells die every second.
In our human body, 1 million cells die every day.

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