Q. Which gas do plants use for photosynthesis?
A. Carbon dioxide
B. Oxygen
C. Hydrogen
D. Carbon monoxide
Answer:- A. Carbon dioxide.
Explanation:
Plants use carbon dioxide (CO₂) for photosynthesis, and here’s why it’s so important in a human-friendly way:
Imagine plants as natural chefs who cook their food using sunlight. But instead of ordinary kitchen ingredients, they use carbon dioxide from the air and water from the soil. They take in carbon dioxide through tiny openings in their leaves called stomata. Using sunlight as energy, they mix the carbon dioxide with water to create glucose—a type of sugar which acts like their food—and oxygen, which they release back into the air.
So, carbon dioxide is like the key ingredient in their recipe for making food and energy. Without it, plants couldn’t grow or produce the oxygen we breathe. It’s pretty amazing that something as simple as the air we exhale helps plants feed themselves and keeps the entire planet balanced!
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