(a)Monocot root and dicot root
(b)Monocot stem and dicot stem
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.
Describe the important steps in muscle contraction.
Define oxygen dissociation curve. Can you suggest any reason for its sigmoidal pattern?