Explanation
Plants absorb carbon dioxide (COâ‚‚) from the atmosphere.
This gas is essential for the process of photosynthesis.
Without carbon dioxide, plants cannot prepare their food or release oxygen.
Why Plants Absorb Carbon Dioxide
- Plants take in carbon dioxide mainly through small openings on their leaves called stomata.
- During photosynthesis, they use carbon dioxide along with water to make glucose (their food).
- Sunlight provides the energy needed for photosynthesis.
- The carbon from COâ‚‚ helps plants build stems, leaves, and roots.
Role of Carbon Dioxide in Photosynthesis
Photosynthesis is the process by which plants make their own food.
Carbon dioxide + Water → (Sunlight) → Glucose + Oxygen
This shows that plants use carbon dioxide and release oxygen as a by-product.
The oxygen released by plants is essential for humans and animals to breathe.
How Plants Take In Carbon Dioxide
- Tiny pores (stomata) on leaves open and close to exchange gases.
- When stomata open, carbon dioxide enters the leaf.
- Inside the leaf, chloroplasts use this COâ‚‚ to make food.
- Plants absorb only the COâ‚‚ they need for photosynthesis.
Importance of Carbon Dioxide for the Environment
- Plants help maintain the balance of gases in the atmosphere.
- By absorbing COâ‚‚, they help reduce its excess amount in the air.
- This helps control global warming to some extent.
- Forests and plants act as natural “carbon sinks” by storing carbon.
Key Points
- Gas absorbed by plants: Carbon dioxide
- COâ‚‚ is needed for photosynthesis
- Plants take in COâ‚‚ through stomata
- Helps plants make food and release oxygen
- Important for environmental balance