Write a contribution of the following scientists in the field of cytology.
GeneralClass 12AllAnswered 27 Mar 2026
Answer
|
Scientist |
Year |
Contribution |
|
(a) Anton van Leeuwenhoek |
1674 |
First to observe and describe living cells (bacteria, protozoa) using simple microscope; called them "animalcules" |
|
(b) Robert Brown |
1831 |
Discovered the nucleus in orchid cells; established nucleus as a regular cell component |
|
(c) Camillo Golgi |
1898 |
First observed Golgi apparatus (Golgi complex) using silver staining method; described its reticular structure |
|
(d) Rudolf Virchow |
1855 |
Expanded cell theory with the principle Omnis cellula e cellula (all cells arise from pre-existing cells); founder of cellular pathology |
|
(e) Walther Flemming |
1879 |
Discovered chromatin and described the process of mitosis (nuclear division); introduced term "chromatin" for nuclear material |
Additional pioneers:
- Robert Hooke (1665): Coined term "cell" from dead cork observation
- Matthias Schleiden (1838): All plants made of cells
- Theodor Schwann (1839): All animals made of cells
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