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Subjects
Science CBSE
Class 9
The Fundamental Unit of Life
Components of cell
12.
NCERT objective type questions
Exercise condition:
6
m.
Choose the best answer:
1
.
Plasmolysis in a plant cell is defined as
Break down (lysis ) of plasma membrane in hypotonic medium
Shrinkage of cytoplasm in hypertonic medium
Shrinkage of nucleoplasm
None of them
2
.
Cell arises from pre-existing cell was stated by
Haeckel
Virchow
Hooke
Schleiden
3
.
Cell theory was given by
Schleiden and Schwann
Virchow
Hooke
Haeckel
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