An instrument used for measuring growth in plants is known as a:

Correct option is D

The correct answer is (d) crescograph.
· A crescograph is an instrument used to measure the growth of plants.
· It was invented by Sir Jagadish Chandra Bose, an Indian scientist.
· The device magnifies the growth of a plant and records it on a graph, allowing scientists to observe and study plant growth in real-time.
· The crescograph can detect even minute changes in plant growth and is used in various botanical and agricultural research applications.
Information Booster:
· Chronometer: A highly accurate timekeeping instrument, often used in navigation.
· Bolometer: An instrument for measuring the power of incident electromagnetic radiation, typically used in astronomy and physics.
· Cardiograph: Also known as an electrocardiograph (ECG or EKG), it is used to measure the electrical activity of the heart.