All living things need energy to survive. The most common source of energy for organisms is glucose molecules, which are used as food. A plant’s food is no exception. Where do plants get the carbon needed to make glucose molecules during the process of photosynthesis?

Question

From the ground
From the air
From the water
From the sun

Answer 1

Plants get the carbon needed to make glucose molecules during the process of photosynthesis from the air. Specifically, they absorb carbon dioxide (CO2) from the atmosphere through small openings in their leaves called stomata.