Gases in plants can be transported by means of

Options

A. Ascent of sap
B. Facilitated diffusion
C. Simple diffusion
D. both b and c

Answer

To solve the question "Gases in plants can be transported by means of," we will analyze the options provided and determine the correct answer step by step.

### Step-by-Step Solution:

1. **Understanding Gas Exchange in Plants**:
- Plants require oxygen for respiration and release carbon dioxide as a byproduct. This gas exchange occurs primarily through the roots and leaves.

2. **Analyzing the Options**:
- **Option A: Ascent of Sap**:
- This refers to the movement of water and minerals from the roots to the leaves via xylem. It is not directly related to gas transport.
- **Option B: Facilitated Diffusion**:
- This is a process where substances move across cell membranes with the help of transport proteins. While it is a method of transport, it is not the primary means for gas exchange in plants.
- **Option C: Simple Diffusion**:
- This is the process where gases move from an area of higher concentration to an area of lower concentration without the need for energy or transport proteins. This is the primary method for gas exchange in plants, especially for oxygen and carbon dioxide.

3. **Conclusion**:
- Based on the analysis, the correct answer is **Simple Diffusion** (Option C). Gases such as oxygen and carbon dioxide are transported in plants mainly through simple diffusion.

### Final Answer:
Gases in plants can be transported by means of **Simple Diffusion**.

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