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प्रश्न
What is the cell theory? Who propounded it and when?
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उत्तर
All animals and plants are composed of cells, which serve as the units of structure and function. This, in short, is called the Cell Theory,
Cell theory was propounded by Theodor Schwann and Matthias Schleiden in the year 1839 and was modified by Rudolf Virchow in 1858.
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संबंधित प्रश्न
Give a brief account of discovery of the cell.
State whether the following statement is true (T) or False (F):
Genes are located on a chromosome.
Who coined the term “cell” ?
Try to find the names of four cell organells hidden in this maze, (hint: The hidden words can appear horizontally or vertically; forwards or backward or even mixed up). Write them in the lines provided. For example : “NUCLEUS” in the last row, seven backward letters.
| A | J | F | B | H | E | M | O | E | L | O | U | C | A | V |
| H | V | L | E | U | C | O | P | L | A | S | T | N | O | E |
| C | H | R | O | M | O | P | L | A | S | T | X | T | E | R |
| S | U | E | L | C | U | N | W | P | L | A | S | T | I | D |
Why was the invention of the microscope so important to the study of living beings?
What was the contribution of the following to our knowledge of cells?
Schleiden
What is the function of the following?
Ribosomes
Fill in the blank with a suitable word:
______ controls all the metabolic activities of the cell.
Answer the following question.
Who discovered cells, and how?
Answer the following question.
Why is the cell called the structural and functional unit of life?
