Before the advent of twentieth century, science did not acknowledge the vitality of trees and plants. Then, on May 10 1901, Acharya Jagadish Chandra Bose proved that plants are like any other life form.
Bose proved that plants have a definite life cycle, a reproductive system and are aware of their surroundings. The demonstration took place in the Royal Society in London, England.
Here is how he proved that plant’s have life:
- Bose used his invention to introduce the world of plants to the humans. His invention – the Crescograph – showed how plants move.
- The Bose Crescograph has a series of gears and a smoked glass plate that record the movement of a plant’s tip under a magnetic scale of 1/10000.
- The plate caught the reflection of the plant and it was marked according to the movement of the plant.
- The plant was dipped in bromide, a poison. The pulse beat of the plant was shown as a light spot on the smoked plate. The spots became unsteady once the plant started take in the poison, proving that plants have life.
- Bose showed how plants behave differently under different environmental factor such as temperature, chemicals, electricity, gases and humidity.
- He showed the electrical nature of conduction among several stimuli in plants, which were earlier believed to have a chemical nature.
- Bose was the first to study the action of microwaves in plant tissues and the changes in the plant cell membrane potential.
- Through this study, he proved that plants are sensitive to pain and affection.