In aquatic systems, which gas is produced by respiration and used by photosynthesis?

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Prepare for the Aquaculture Technician Certification Test. Study with flashcards and multiple choice questions, each question offering hints and explanations to ensure you are ready for your exam!

Multiple Choice

In aquatic systems, which gas is produced by respiration and used by photosynthesis?

Explanation:
In aquatic systems, respiration releases carbon dioxide into the water, and photosynthesis uses that same gas as the carbon source to build organic matter. That makes carbon dioxide the gas produced by respiration and consumed by photosynthesis. Oxygen, while produced by photosynthesis, is not the gas that respiration produces and then photosynthesis uses. Nitrogen isn’t the gas involved in this gas-exchange cycle, and methane isn’t part of the typical respiration–photosynthesis interaction in most aquatic environments.

In aquatic systems, respiration releases carbon dioxide into the water, and photosynthesis uses that same gas as the carbon source to build organic matter. That makes carbon dioxide the gas produced by respiration and consumed by photosynthesis. Oxygen, while produced by photosynthesis, is not the gas that respiration produces and then photosynthesis uses. Nitrogen isn’t the gas involved in this gas-exchange cycle, and methane isn’t part of the typical respiration–photosynthesis interaction in most aquatic environments.

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