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

Choose the correct sentence:

1.

Size of a cell varies from centimetres to metres
If a cell is smaller it has more volume and more surface area

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.

Never cells are about one metre in length.
Nerve cells are about one millimetre in length.

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