List of top Agronomy Questions on Meteorological Instruments

According to IMD, a day is called as rainy day if the minimum amount of rainfall during a period of 24 hours is:

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): C4 plants usually do not reach radiation saturation in direct sunlight.
Reason (R): C4 plants use high radiation levels more efficiently at low levels than under full sunlight.
In light of the above statements, choose the correct answer from the options given below.

Given below are two statements:
Statement (I): The greenhouse effect is retention of heat in the lower atmosphere due to absorption and re-radiation by clouds and certain gases.
Statement (II): Long-wave thermal solar radiation received from the sun passes through the atmosphere with little or no interference and warms the earth's surface.
In light of the above statements, choose the most appropriate answer from the options given below.

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): Mie scattering depends on the size of the scatterers in relation to the wavelength of radiation being scattered.
Reason (R): Approximate particle size of Mie scatterer is 0.1 to 10 $\mu$m.
In light of the above statements, choose the correct answer from the options given below.

The instrument used for measuring photosynthetically active radiation (PAR) is

Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).
Assertion (A): The temperature increases in the troposphere from ground to tropopause.
Reason (R): Ozone absorbs ultra violet radiation in the stratosphere and makes it warm.
In light of the above statements, choose the correct answer from the options given below.

Most abundant gas in our atmosphere that plants cannot utilize directly in its atmospheric form and is captured by certain bacteria that live symbiotically in the nodules of roots

Match List-I with List-II (choose the correct answer from the options given below):

List-I (Instrument)	List-II (Parameter)
(A) Wind vane	(I) Photosynthetically active radiation
(B) Quantum sensor	(II) Wind speed
(C) Anemometer	(III) Atmospheric pressure
(D) Barometer	(IV) Wind direction

Choose the correct answer from the options given below: