A seed unable to germinate because the external conditions are not favourable is called .

Options

A. Cilmacteric C
B. Quiescence
C. Dormancy
D. Scarification

Answer

To answer the question "A seed unable to germinate because the external conditions are not favorable is called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Question**: The question is asking for a term that describes a seed that cannot germinate due to unfavorable external conditions.

2. **Identifying Key Terms**: The key terms in the question are "seed," "unable to germinate," and "external conditions not favorable."

3. **Exploring the Options**: The options provided are:
- A) Primary characteristics
- B) Questions
- C) Dormancy
- D) Scarification

4. **Defining Dormancy**: Dormancy refers to a state in which a viable seed is unable to germinate even when conditions are suitable for germination. This state is often a survival mechanism that allows seeds to withstand unfavorable environmental conditions.

5. **Analyzing Other Options**:
- **Primary characteristics** do not relate to seed germination.
- **Questions** are not relevant to the context of seed germination.
- **Scarification** is a process that can help seeds germinate but does not describe the state of being unable to germinate.

6. **Selecting the Correct Answer**: Based on the definition and analysis, the correct answer is **C) Dormancy**.

### Final Answer:
A seed unable to germinate because the external conditions are not favorable is called **dormancy**.

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