According to cosmozoic theory, life coines on earth from other planets in space in the form of

Options

A. Spores
B. Seeds
C. Gametes
D. All of these

Answer

### Step-by-Step Solution:

1. **Understanding the Cosmozoic Theory**:
- The Cosmozoic theory suggests that life on Earth originated from extraterrestrial sources. This means that life did not begin on Earth but was brought here from other planets or celestial bodies.

2. **Forms of Life in the Theory**:
- According to this theory, life is believed to have arrived on Earth in a specific form. The options provided are spores, seeds, gametes, and all of these.

3. **Identifying the Correct Form**:
- The theory specifically mentions that life came in the form of highly resistant spores. Spores are reproductive units that are capable of developing into a new organism and are known for their resilience in harsh conditions.

4. **Historical Context**:
- The Cosmozoic theory was proposed by Richter in 1865 and later supported by Arrhenius in 1908. This historical context helps in understanding the development of the theory and its acceptance in scientific discussions.

5. **Conclusion**:
- Based on the information provided, the correct answer to the question is that life on Earth, according to the Cosmozoic theory, came from other planets in the form of **spores**.

### Final Answer:
- **Spores**

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