Question

Xavier drew a diagram to compare the roles of oxygen and hydrogen in photosynthesis.

Which label belongs in the area marked X?

Enters plant as a part of the water
Combines with carbon dioxide
Is released into the air through stomata
Is stored in leaves for later use

Answer 1

C. Is released into the air through stomata

Step-by-step explanation:

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Answer 2

Is released into the air through stomata

Step-by-step explanation:

Oxygen and hydrogen both exists as gaseous molecules in the atmosphere. However, one of them (oxygen) is a product of photosynthesis while the other (hydrogen) is one of the constituents of the molecule that starts the process of photosynthesis.

According to this question, the X used in the attached diagram is the role of oxygen in photosynthesis. Oxygen is released as a product of photosynthesis and goes out of the plant into the air via the STOMATA. Hence, the gas released into the air via stomata is OXYGEN.