The part of the plant that takes in carbon dioxide from the air for photosynthesis is the stomata.
Explanation:
The process of photosynthesis in plants requires carbon dioxide as one of the essential ingredients. The stomata, which are small openings found on the surface of leaves, play a crucial role in the exchange of gases between the plant and the environment. Here is a detailed explanation of how the stomata function in the uptake of carbon dioxide:
1. Structure of stomata:
- Stomata are surrounded by two specialized cells called guard cells.
- These guard cells can change shape to open or close the stomatal pore.
2. Opening and closing of stomata:
- The stomata open during the day and close during the night.
- They open in response to light, which triggers the guard cells to take up water and swell.
- When the guard cells swell, they create an opening for the exchange of gases.
3. Carbon dioxide uptake:
- When the stomata are open, carbon dioxide from the air enters the leaf through the stomatal pores.
- The concentration of carbon dioxide is usually higher in the external air compared to inside the leaf.
- This concentration gradient allows carbon dioxide to diffuse into the leaf through the stomata.
4. Inside the leaf:
- Once inside the leaf, carbon dioxide is used during the process of photosynthesis.
- It enters the chloroplasts, where it combines with water and sunlight to produce glucose and oxygen.
In conclusion, the stomata are responsible for the uptake of carbon dioxide from the air, allowing plants to perform photosynthesis and produce energy-rich carbohydrates.