Questions: Plants must open their to let in the carbon dioxide that is required for photosynthesis.
stroma
stomata
mesophyll
Transcript text: 20. Plants must open their $\qquad$ to let in the carbon dioxide that is required for
1 point
photosynthesis.
stroma
stomata
mesophyll
Solution
The answer is the second one (or B): stomata.
Explanation for each option:
Stroma: This is the fluid-filled space inside the chloroplasts where the Calvin cycle of photosynthesis takes place. It is not involved in the direct intake of carbon dioxide from the atmosphere.
Stomata: These are small openings on the surface of leaves and stems that allow for gas exchange. They open to let in carbon dioxide, which is necessary for photosynthesis, and release oxygen.
Mesophyll: This refers to the inner tissue of a leaf, containing many chloroplasts. While it is the site where photosynthesis occurs, it is not the structure that opens to let in carbon dioxide.
Summary:
Plants must open their stomata to let in the carbon dioxide that is required for photosynthesis.