Crescograph is a device used for measuring (JFR Plant Science 2018)

✅Explanation: A Crescograph is a sensitive instrument used to measure the growth movements in plants. It was invented by Sir Jagadish Chandra Bose.

📌 Other Options Explanations:
-Atmospheric pressure: Measured by a barometer
-Wind Speed: Measured by an anemometer
-Duration of sunshine: Measured by a sunshine recorder

🔑Key Points:

✏Jagdish Chandra Bose:
-He was an Indian scientist who invented the Crescograph, an instrument that can measure the growth of plants.
-The instrument showed some striking results, such as it was able to demonstrate the feeling of plants.
-Dr. J.C. Bose hypothesized that the plants also understand affection, feel pain, etc.