Abiogenesis or spontaneous generation means :

Options

A. Origin of life from living organism
B. Origin of life from non living organism
C. Origin of viruses and microbes
D. Origin of life from outer space

Answer

**Step-by-Step Solution:**

1. **Understanding the Terms:**
- Abiogenesis refers to the process by which life arises naturally from non-living matter. It is often contrasted with biogenesis, which is the principle that life comes from pre-existing life.

2. **Identifying the Options:**
- The question provides four options:
a) Origin of life from living organisms
b) Origin of life from non-living organisms
c) Origin of viruses and microbes
d) Origin of life from outer space

3. **Analyzing Each Option:**
- Option (a) states that life originates from living organisms, which is incorrect according to the concept of abiogenesis.
- Option (b) states that life originates from non-living organisms. This aligns with the definition of abiogenesis, making it a strong candidate.
- Option (c) mentions the origin of viruses and microbes. While viruses are a topic of debate regarding their origins, this does not directly relate to abiogenesis.
- Option (d) suggests that life comes from outer space, which relates more to panspermia than abiogenesis.

4. **Conclusion:**
- Based on the analysis, the correct answer is **(b) Origin of life from non-living organisms**. This reflects the fundamental principle of abiogenesis.