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

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Question

RRB NTPC - 2019

General Science

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

This question was previously asked in

RRB NTPC 2019 CBT 1 Question Paper PDF (31-Jan-2021) (Shift 1)

chronometer

bolometer

cardiograph

crescograph

The correct answer is

crescograph

Instrument for Measuring Plant Growth

The question asks to identify the instrument used specifically for measuring the growth of plants.

Analyzing Instrument Functions

Chronometer: This instrument is designed to measure time accurately. It is not related to measuring biological growth.
Bolometer: A bolometer is used to measure the power of electromagnetic radiation, like heat or infrared radiation. It does not measure plant growth.
Cardiograph: This device records the electrical activity of the heart (cardiogram). It is used in medical contexts, not for plant physiology.
Crescograph: A crescograph is a specialized scientific instrument used to measure and record plant growth, often the rate of elongation of shoots or roots.

Conclusion

Based on the functions of the given instruments, the crescograph is the correct instrument for measuring plant growth.

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