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प्रश्न
Give a brief account of discovery of the cell.
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उत्तर
Discovery of cell:
Cell was first discovered and named in 1665 by an English scientist Robert Hooke. He was examining a thin slice of cork and observed that the cork resembled the structure of honeycomb consisting of many little compartments. He called these compartments as cells (meaning 'little room' in Latin).
In 1838, Jakob Matthias Schleiden first proposed the idea that all plants consist of cells.
In 1839, Theodor Schwaan proposed that all animals and plants are made up of cells.
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संबंधित प्रश्न
Where are chromosomes found in a cell? State their function.
What is the name of the chemical substance which constitutes the genes?
Fill up the blank with the terms given below
All cells arise from ______ cells
Give one main function of the following:
Chloroplast
Match the items in column A with the appropriate items in column B:
| column A | column B |
| 1. Platform or workplace for the synthesis of proteins | a. Golgi complex |
| 2. A powerhouse of cells | b. Ribosomes |
| 3. Help in the formation of cell plate during cell division | c. Chloroplast |
| 4. Site for photosynthesis | d. Mitochondria |
| 5. Control tower of cell | e. Chromosomes |
| 6. A structure bearing genes | f. Nucleus |
Which is the smallest cell?
the question has four options. Choose the correct answer:
The cell was discovered by
Robert Hooke published a book named ______ in the year 1665.
Who proposed the "Cell theory"?
