Both animal and plant cells have mitochondria - Yes; they both need mitochondria for cellular respiration.
Cellular respiration
It is a process in which respiratory substrates such as starch, glucose, fats, and proteins are broken down to release energy. This energy is then trapped for the synthesis of ATP to release carbon dioxide.
Cellular respiration takes place in mitochondria, a cell organelle present in all eukaryotic organisms including plants and animals. This organelle is called as powerhouse of the cell as it produces energy for the cell.
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