(i)
(ii)
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 cells are formed from pre-existing cells.
(d) A unicellular organism carries out its life activities within a single cell.
What are the steps involved in formation of a root nodule?
Define a taxon. Give some examples of taxa at different hierarchical levels.
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