Answer :
Final answer:
Stomata and guard cells in land plants regulate gas exchange efficiently.
Explanation:
Stomata are the adaptation in land plants that help control gas exchange with the atmosphere. These are small openings that allow for the entry of carbon dioxide and the release of oxygen and water vapor. Guard cells regulate the opening and closing of stomata, ensuring the efficient process of photosynthesis.
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Answer: D. Stomata
Explanation:
Stomata are tiny pores in plant tissue that are found on the underside of leaves and allow for gas exchange and water loss regulation. The gas exchange is controlled by the opening and closing of the stomata to allow for carbon dioxide into the leaf and oxygen out.