Question

Assertion :Schleiden and Schwann were the first to put forward cell theory. Reason: The cells are always living unit.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

Answer: (B)

• Cell theory was proposed by a German botanist, Matthias Schleiden and English zoologist, Theodor Schwann in the year 1839. Cell theory was considered as the most acceptable theory which, elucidated the functioning of a cell.
• The cell theory includes the following points -

(1) All living things are made up of cells.
(2) The cell is the smallest living thing that can perform all the functions of life.

• Later on, in the year 1855 Rudolf Virchow added a new point in cell theory that all cells must come from pre-existing cells, which was also known as "Omnis cellula e cellula".

So, the correct answer is option B.