when a plant undergoes photosynthesis, one of the by-products is

One of the main by‑products of photosynthesis in plants is oxygen (O₂).

Quick Scoop

When a plant undergoes photosynthesis, it uses carbon dioxide, water, and light to make glucose, and in the process it releases oxygen as a by‑product into the air. This oxygen comes from the splitting of water molecules in the chloroplasts during the light‑dependent reactions.

In simple terms

• Plants take in carbon dioxide and water and, using light, make sugar for energy.

• While doing this, they release extra oxygen that they do not need, so it diffuses out of the leaves into the atmosphere.

So for the question “when a plant undergoes photosynthesis, one of the by- products is” , the correct answer is: oxygen (O₂).

TL;DR: When a plant undergoes photosynthesis, one of the by‑products is oxygen (O₂).

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