Which combination of gases is suitable for fruit ripening

Options

A. 80% `CO_2` and 20% `CH_2`
B. 80%`CH_4` and 20%`CO_2 `
C. 80% `CO_2` and 20% `O_2 `
D. 80% `C_2H_4`and 20% `CO_2`

Answer

D

Explanation

Ethylene is a gaseous hormone which promotes ripening of fruits. Methionine amino acid is precursor molecule for ethylene synthesis. Ethylene synthesis takes place in all parts of a plant such as roots, stems, leaves, fruits, seeds, etc.