Regarding assertion and reason choose the right option
Assertion [A]: Only some fraction of the total solar energy input is utilized by plants.
Reason [R]: Of the total solar radiation, only a certain spectrum is used by plants, and this region of the spectrum is called PAR.
- Both A and R are true and R explains A
- Both A and R are true R does not explain A
- A is true and R is false
- Both A and R are false