Sometimes , higher plants and animals too perform anaerobic respiration .

Explanation

The process of respiration yeilds energy which occurs by the oxidation of foodstuffs.
(ii) To perform aerobic respiration , higher plants and animals aerobic respiration .
(iii) Cases when oxygen gets depleted these organisms respire anaerobically to obtain energy.
(iv) Therefore, sometimes higher plants and animals too perform anaerobic respiration .