Which one of the following elements is present in the green pigment of leaves?
A. Magnesium
B. Iron
C. Calcium
D. Copper
Answer: Option A
A. Magnesium
B. Iron
C. Calcium
D. Copper
Answer: Option A
The plasma membrane is covered by a cell wall in cells of
A. Plants
B. Bacteria
C. Fungi and Algae
D. All of the above
A. Robert Brown
B. Schleiden
C. Theodore Schwann
D. Rudolf Virchow
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