Per NCERT, which of these is a tenet of the CLASSICAL CELL THEORY?
AOnly multicellular organisms contain cells
BThe cell is the basic unit of structure and function in all living organisms
CCells arise spontaneously from non-living matter
DCells only exist in plants, not in animals
Answer & Solution
Correct answer: B. The cell is the basic unit of structure and function in all living organisms
Per NCERT §2.5, cell theory: (i) all organisms are made of cells, (ii) cell is the basic unit of life, (iii) all cells from pre-existing cells. The other options contradict cell theory.
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