Answer:

The correct answer is option 'A' - Jagadish Chandra Bose.

Explanation:

Jagadish Chandra Bose was an eminent Indian scientist who made significant contributions to the field of plant physiology. He invented a device called the Crescograph, which was used to measure the growth in plants.

What is the Crescograph?

The Crescograph is a device that measures the growth of plants by magnifying the movements in their cells. It consists of a series of levers and amplifiers that can detect even the smallest movements in plant tissues. The device is capable of magnifying the growth movements of plants up to 10,000 times, allowing scientists to observe and study plant growth in great detail.

How does the Crescograph work?

The Crescograph works by attaching a plant to its delicate levers and amplifiers. As the plant grows, the movements in its cells are amplified and recorded by the device. These movements can be observed and measured, providing valuable insights into the growth patterns and mechanisms of plants.

Significance of the Crescograph:

The invention of the Crescograph was a groundbreaking achievement in the field of plant physiology. It allowed scientists to study the growth patterns of plants in ways that were previously impossible. By observing the movements in plant cells, scientists could understand how plants respond to external stimuli, such as light, gravity, and temperature.

Contributions of Jagadish Chandra Bose:

Jagadish Chandra Bose was not only the inventor of the Crescograph but also made several other significant contributions to science. He conducted extensive research on the behavior of plants and demonstrated that they have similar responses to external stimuli as animals. He also pioneered the use of radio waves in scientific research, which laid the foundation for the development of wireless communication.

Overall, Jagadish Chandra Bose's invention of the Crescograph revolutionized the study of plant growth and physiology. His innovative device enabled scientists to gain a deeper understanding of the intricate mechanisms that govern plant growth and development.