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4. Which of the following is correct:
       (a) Cells of all living organisms have a nucleus.
       (b) Both animal and plant cells have a well-defined cell wall.
       (c) In prokaryotes, there are no membrane-bound organelles.
       (d) Cells are formed de novo from abiotic materials.

Answers (2)

 Answer

All other statements are incorrect as cells of some organisms can lack a nucleus (e.g. RBC ), animal cells do not possess a cell wall and cells are formed from pre-existing cells. In prokaryotes, there are no membrane-bound organelles. Hence, the correct statement is (c). 

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Sonika

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Jaydeep Kumar

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