MCQ
Which combination of gases is suitable for fruit ripening?
- A80% CO2 and 20%CH2
- B80% CH4 and 20%CO2
- C80% CO2 and 20% O2
- D80% C2H4 and 20% CO2
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$(i)$ is released by sympathetic fibers
$(ii)$ is released by parasympathetic fibers
$(iii)$ increases the heart rate
$(iv)$ decreases blood pressure.
Which of the above statements are correct ?