How does a plant breathe

Knowledge pool
Habitats - In the forest

  • The Venus flytrap consumes a lot of energy when it snaps shut (source: Colourbox)

Plants also use energy. The Venus flytrap, for example, a carnivorous plant, closes its trap door very quickly when an insect has landed on it.

Such movements need energy, just like growth, the formation of flowers and seeds etc. The crucial difference compared to animals is that plants can generate the energy they consume through photosynthesis themselves. Animals need this energy - e.g. B. by eating plants - feed from the outside.

When the sun doesn't shine at night and photosynthesis is not possible, plants use cellular respiration to provide energy. Plant cells also have mitochondria that operate cell respiration. The metabolic processes are the same as in animals. Plants take in oxygen through the stomata of the leaves; Animals and humans ingest it through their mouth, windpipe and lungs.

The summary comparison between animals and plants with regard to the important metabolic processes photosynthesis and cell respiration shows that ...

● only plants do photosynthesis and have chloroplasts.
● Plants, animals and humans have mitochondria and do cellular respiration.
● Animals and humans depend on plants, because only plants can produce high-energy compounds from sunlight and inorganic substances.
● Plants, animals and humans depend on high-energy, carbon-containing compounds; they are burned in the cell respiration and provide the energy for all life processes.