Step 1: Concept
Apomixis is a form of asexual reproduction in plants that mimics sexual reproduction by producing seeds.
Step 2: Meaning
The term is derived from Greek words meaning "away from mixing," referring to the absence of the union of male and female gametes.
Step 3: Analysis
In sexual reproduction, seeds are the result of fertilisation. However, in apomictic plants, the embryo develops directly from diploid cells of the ovule or an unfertilised egg. This bypasses both meiosis and syngamy (fertilisation).
Step 4: Conclusion
Since the process results in seed formation without the fusion of gametes, option (C) is the correct definition.
Final Answer: (C)