Answer:
Hmm.
Step-by-step explanation:
'Plants do not have lungs or any respiratory orgasm in themselves so they don't need the process of respiration. Plants do not need a respiratory system because roots, stems, leaves of plants exchange gases for respiration separately. They don't have lungs to breathe so they don't need a respiratory system.'
Basically, plants don't need respiratory organs because they have roots, stems, and leaves, which they use to breathe.
Also, because they are plants. These are the same guys who take energy from the sun.