Fundamental Unit of Life
NCERT Q & A
Fundamental Unit of Life
Q1: Who observed the cells the first time?
Answer: Robert Hooke. He observed a thin slice of cork cells under a simple microscope.
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| Simple Microscope made by Robert Hooke (credits: Wikipedia) |
Q2: Define Cell
Answer: The cell is the structural and functional unit of life.
Q3: Who proposed the cell theory?
Answer: Schleiden (1838) and Schwann (1839).
Q4: Who expanded cell theory by suggesting that all cells arise from pre-existing cells?
Answer: Virchow (1855.
Q5: In which year the electron microscope was invented?
Answer: 1940
Q6: Name the book in which Robert Hooke published his observations about cork cells.
Answer: Micrographia.
