Which is the least important factor for germination of seeds in Angiosperms ?

Options

A. Light
B. Temperature
C. Air
D. Water

Answer

To determine the least important factor for the germination of seeds in angiosperms, we can analyze the various factors that influence this process.

### Step-by-Step Solution:

1. **Identify the Factors for Germination**: The primary factors that affect seed germination in angiosperms include water, air (oxygen), temperature, and light.

2. **Understand the Role of Water**: Water is crucial for germination because it helps dissolve the stored food in seeds, allowing the developing embryo to utilize it. Without water, seeds cannot absorb nutrients, and germination will not occur.

3. **Evaluate the Importance of Air (Oxygen)**: Seeds require oxygen for respiration during germination. Oxygen is essential for the metabolic processes that support the growth of the embryo. Lack of oxygen can hinder germination.

4. **Analyze the Temperature Requirement**: Seeds need a suitable temperature range for germination. If the temperature is too high or too low, it can adversely affect the germination process. Each species has its optimal temperature range.

5. **Consider the Role of Light**: Light is generally not essential for seed germination. Many seeds can germinate in darkness, and some even prefer it. While light may influence the growth of seedlings after germination, it does not play a critical role in the actual germination process.

6. **Conclusion**: Based on the analysis of these factors, light is the least important factor for the germination of seeds in angiosperms. Germination can occur without light, making it less critical compared to water, air, and temperature.

### Final Answer:
The least important factor for germination of seeds in angiosperms is **light**.