Question

The crescograph was invented by

• A. Bose
• B. Pfeffer
• C. Ganong
• D. Dixon

Answer 1

The correct option is A

Bose

The correct option is A:

The explanation for the correct option:

1. Crescograph is a plant growth measurement instrument designed by one of India's greatest scientists.
2. Sir Jagdish Chandra Bose invented it in the early twentieth century.
3. To capture the movement of a plant's tip, Bose utilizes a system of clockwork gears and a smoked glass plate.
4. Bose developed the crescograph to establish that plants have life and to introduce their world to human life.
5. It can detect even minor movements and growth in the plant body.

The explanation for the incorrect options:

Option (B):

1. Wilhelm Pfeffer invented the Pfeffer Cell Apparatus in 1877 to determine the minimum pressure required to prevent a pure solvent from entering into a solution through a semi-permeable barrier, known as osmotic pressure.

Option (C):

1. The Ganong's Potometer is used to measure the rate of transpiration in a clipped twig.

Option (D):

1. Dixon's study on plant tissue cultures' ability to produce phytoalexin.

Final answer: The crescograph was invented by Bose.