Page 12 - SCERT Kerala State Syllabus 8th Standard Basic Science Textbooks English Medium Part 1_Neat

Discovering the cell
Robert Hooke was the first scientist who observed cells
with the help of a simple microscope. He observed
the section of cork through a microscope and called
the tiny chambers seen in the section 'cell.'
Cell observed by
Robert Hooke
Robert Hooke
Fig. 1.3
Study o f the cell is an extensive branch of science which enabled us to overcome the
is rapidly developing nowadays. It is known as Cell
Biology. Remarkable findings that paved way for the
development of cell biology were made in the middle
of nineteenth century.
Milestones in the history of Cell Biology
Robert Brown
Discovered the centre of
the cell, and named it the
nucleus.
1831
Theodor Schwann
Found out that the body
of an animal is made up
of cells.
1839
Science for Survival
Gandhiji observing pathogens
through a microscope
(Sevagram Ashram – 1940)
It was the invention of
microscopes that enabled us to
observe and study microscopic
pathogens. This brought about
drastic changes in the field of
medicine. Such instruments
limitations of vision and bring the
diseases that the world dreaded,
under control.
M.J.Schleiden
Found out that the body
of a plant is made up of
cells.
1838
Rudolf Virchow
Observed dividing cells and
inferred that new cells arise
only from existing cells.
1858
Basic Science VIII 11