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Get Answers to all your Questions
1. Which of the following is not correct?
(a). Robert Brown discovered the cell.
(b). Schleiden and Schwann formulated the cell theory
(c). Virchow explained that the cells are formed from pre-existing cells.
(d). A unicellular organism carries out its activities within a single cell
Answers (1)
(a) is not correct. All the others are correct.
Robert Brown discovered the nucleus and not the cell. Cells were first observed by Robert Hooke when he was studying the cork cells of plants. Metthias Schleiden and Theodore Schwann( 1938) proposed the cell theory which was later modified by Rudolf Virchow(1855). The cell theory states that
1. All living organisms are composed of cells and products of cells.
2. All cells arise from pre-existing cells. ( This was suggested by Rudolf Virchow)
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