Plants, like all living organisms, need glucose and oxygen for respiration. However, unlike animals, they don't obtain these from the environment directly. Here's how they get them:

Glucose:

* Photosynthesis: Plants produce their own glucose through photosynthesis. This process uses sunlight, carbon dioxide, and water to create glucose and oxygen. The glucose is then used as the primary energy source for the plant.

Oxygen:

* Photosynthesis: As a byproduct of photosynthesis, plants release oxygen into the atmosphere. This oxygen is then absorbed by the plant through its leaves and roots, just like any other organism.

In Summary:

Plants are unique in that they produce their own glucose and oxygen through photosynthesis, which then fuels their respiration process. They are essentially self-sufficient in this regard, unlike animals who need to consume food and breathe air for these vital components.